80324720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:719

約数の個数: 120

約数和(自身を含む): 224592768

約数和(自身を除く): 144268048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 661, 784, 868, 980, 1085, 1240, 1322, 1519, 1736, 1960, 2170, 2480, 2644, 3038, 3305, 3472, 3920, 4340, 4627, 5288, 6076, 6610, 7595, 8680, 9254, 10576, 12152, 13220, 15190, 17360, 18508, 20491, 23135, 24304, 26440, 30380, 32389, 37016, 40982, 46270, 52880, 60760, 64778, 74032, 81964, 92540, 102455, 121520, 129556, 143437, 161945, 163928, 185080, 204910, 259112, 286874, 323890, 327856, 370160, 409820, 518224, 573748, 647780, 717185, 819640, 1004059, 1147496, 1295560, 1434370, 1639280, 2008118, 2294992, 2591120, 2868740, 4016236, 5020295, 5737480, 8032472, 10040590, 11474960, 16064944, 20081180, 40162360, 80324720]

約数ペア:

[(1, 80324720), (2, 40162360), (4, 20081180), (5, 16064944), (7, 11474960), (8, 10040590), (10, 8032472), (14, 5737480), (16, 5020295), (20, 4016236), (28, 2868740), (31, 2591120), (35, 2294992), (40, 2008118), (49, 1639280), (56, 1434370), (62, 1295560), (70, 1147496), (80, 1004059), (98, 819640), (112, 717185), (124, 647780), (140, 573748), (155, 518224), (196, 409820), (217, 370160), (245, 327856), (248, 323890), (280, 286874), (310, 259112), (392, 204910), (434, 185080), (490, 163928), (496, 161945), (560, 143437), (620, 129556), (661, 121520), (784, 102455), (868, 92540), (980, 81964), (1085, 74032), (1240, 64778), (1322, 60760), (1519, 52880), (1736, 46270), (1960, 40982), (2170, 37016), (2480, 32389), (2644, 30380), (3038, 26440), (3305, 24304), (3472, 23135), (3920, 20491), (4340, 18508), (4627, 17360), (5288, 15190), (6076, 13220), (6610, 12152), (7595, 10576), (8680, 9254)]