1285195520

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:727

約数の個数: 216

約数和(自身を含む): 3702158208

約数和(自身を除く): 2416962688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 112, 124, 128, 140, 155, 160, 196, 217, 224, 245, 248, 256, 280, 310, 320, 392, 434, 448, 490, 496, 560, 620, 640, 661, 784, 868, 896, 980, 992, 1085, 1120, 1240, 1280, 1322, 1519, 1568, 1736, 1792, 1960, 1984, 2170, 2240, 2480, 2644, 3038, 3136, 3305, 3472, 3920, 3968, 4340, 4480, 4627, 4960, 5288, 6076, 6272, 6610, 6944, 7595, 7840, 7936, 8680, 8960, 9254, 9920, 10576, 12152, 12544, 13220, 13888, 15190, 15680, 17360, 18508, 19840, 20491, 21152, 23135, 24304, 26440, 27776, 30380, 31360, 32389, 34720, 37016, 39680, 40982, 42304, 46270, 48608, 52880, 55552, 60760, 62720, 64778, 69440, 74032, 81964, 84608, 92540, 97216, 102455, 105760, 121520, 129556, 138880, 143437, 148064, 161945, 163928, 169216, 185080, 194432, 204910, 211520, 243040, 259112, 277760, 286874, 296128, 323890, 327856, 370160, 388864, 409820, 423040, 486080, 518224, 573748, 592256, 647780, 655712, 717185, 740320, 819640, 846080, 972160, 1004059, 1036448, 1147496, 1184512, 1295560, 1311424, 1434370, 1480640, 1639280, 1944320, 2008118, 2072896, 2294992, 2591120, 2622848, 2868740, 2961280, 3278560, 4016236, 4145792, 4589984, 5020295, 5182240, 5245696, 5737480, 5922560, 6557120, 8032472, 8291584, 9179968, 10040590, 10364480, 11474960, 13114240, 16064944, 18359936, 20081180, 20728960, 22949920, 26228480, 32129888, 36719872, 40162360, 41457920, 45899840, 64259776, 80324720, 91799680, 128519552, 160649440, 183599360, 257039104, 321298880, 642597760, 1285195520]

約数ペア:

[(1, 1285195520), (2, 642597760), (4, 321298880), (5, 257039104), (7, 183599360), (8, 160649440), (10, 128519552), (14, 91799680), (16, 80324720), (20, 64259776), (28, 45899840), (31, 41457920), (32, 40162360), (35, 36719872), (40, 32129888), (49, 26228480), (56, 22949920), (62, 20728960), (64, 20081180), (70, 18359936), (80, 16064944), (98, 13114240), (112, 11474960), (124, 10364480), (128, 10040590), (140, 9179968), (155, 8291584), (160, 8032472), (196, 6557120), (217, 5922560), (224, 5737480), (245, 5245696), (248, 5182240), (256, 5020295), (280, 4589984), (310, 4145792), (320, 4016236), (392, 3278560), (434, 2961280), (448, 2868740), (490, 2622848), (496, 2591120), (560, 2294992), (620, 2072896), (640, 2008118), (661, 1944320), (784, 1639280), (868, 1480640), (896, 1434370), (980, 1311424), (992, 1295560), (1085, 1184512), (1120, 1147496), (1240, 1036448), (1280, 1004059), (1322, 972160), (1519, 846080), (1568, 819640), (1736, 740320), (1792, 717185), (1960, 655712), (1984, 647780), (2170, 592256), (2240, 573748), (2480, 518224), (2644, 486080), (3038, 423040), (3136, 409820), (3305, 388864), (3472, 370160), (3920, 327856), (3968, 323890), (4340, 296128), (4480, 286874), (4627, 277760), (4960, 259112), (5288, 243040), (6076, 211520), (6272, 204910), (6610, 194432), (6944, 185080), (7595, 169216), (7840, 163928), (7936, 161945), (8680, 148064), (8960, 143437), (9254, 138880), (9920, 129556), (10576, 121520), (12152, 105760), (12544, 102455), (13220, 97216), (13888, 92540), (15190, 84608), (15680, 81964), (17360, 74032), (18508, 69440), (19840, 64778), (20491, 62720), (21152, 60760), (23135, 55552), (24304, 52880), (26440, 48608), (27776, 46270), (30380, 42304), (31360, 40982), (32389, 39680), (34720, 37016)]