81800320

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:107

約数の個数: 192

約数和(自身を含む): 243086400

約数和(自身を除く): 161286080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 32, 35, 38, 40, 56, 62, 64, 70, 76, 80, 95, 112, 124, 128, 133, 140, 152, 155, 160, 190, 217, 224, 248, 266, 280, 304, 310, 320, 380, 434, 448, 496, 532, 560, 589, 608, 620, 640, 665, 760, 868, 896, 961, 992, 1064, 1085, 1120, 1178, 1216, 1240, 1330, 1520, 1736, 1922, 1984, 2128, 2170, 2240, 2356, 2432, 2480, 2660, 2945, 3040, 3472, 3844, 3968, 4123, 4256, 4340, 4480, 4712, 4805, 4960, 5320, 5890, 6080, 6727, 6944, 7688, 8246, 8512, 8680, 9424, 9610, 9920, 10640, 11780, 12160, 13454, 13888, 15376, 16492, 17024, 17360, 18259, 18848, 19220, 19840, 20615, 21280, 23560, 26908, 27776, 30752, 32984, 33635, 34720, 36518, 37696, 38440, 41230, 42560, 47120, 53816, 61504, 65968, 67270, 69440, 73036, 75392, 76880, 82460, 85120, 91295, 94240, 107632, 123008, 127813, 131936, 134540, 138880, 146072, 153760, 164920, 182590, 188480, 215264, 255626, 263872, 269080, 292144, 307520, 329840, 365180, 376960, 430528, 511252, 527744, 538160, 584288, 615040, 639065, 659680, 730360, 861056, 1022504, 1076320, 1168576, 1278130, 1319360, 1460720, 2045008, 2152640, 2337152, 2556260, 2638720, 2921440, 4090016, 4305280, 5112520, 5842880, 8180032, 10225040, 11685760, 16360064, 20450080, 40900160, 81800320]

約数ペア:

[(1, 81800320), (2, 40900160), (4, 20450080), (5, 16360064), (7, 11685760), (8, 10225040), (10, 8180032), (14, 5842880), (16, 5112520), (19, 4305280), (20, 4090016), (28, 2921440), (31, 2638720), (32, 2556260), (35, 2337152), (38, 2152640), (40, 2045008), (56, 1460720), (62, 1319360), (64, 1278130), (70, 1168576), (76, 1076320), (80, 1022504), (95, 861056), (112, 730360), (124, 659680), (128, 639065), (133, 615040), (140, 584288), (152, 538160), (155, 527744), (160, 511252), (190, 430528), (217, 376960), (224, 365180), (248, 329840), (266, 307520), (280, 292144), (304, 269080), (310, 263872), (320, 255626), (380, 215264), (434, 188480), (448, 182590), (496, 164920), (532, 153760), (560, 146072), (589, 138880), (608, 134540), (620, 131936), (640, 127813), (665, 123008), (760, 107632), (868, 94240), (896, 91295), (961, 85120), (992, 82460), (1064, 76880), (1085, 75392), (1120, 73036), (1178, 69440), (1216, 67270), (1240, 65968), (1330, 61504), (1520, 53816), (1736, 47120), (1922, 42560), (1984, 41230), (2128, 38440), (2170, 37696), (2240, 36518), (2356, 34720), (2432, 33635), (2480, 32984), (2660, 30752), (2945, 27776), (3040, 26908), (3472, 23560), (3844, 21280), (3968, 20615), (4123, 19840), (4256, 19220), (4340, 18848), (4480, 18259), (4712, 17360), (4805, 17024), (4960, 16492), (5320, 15376), (5890, 13888), (6080, 13454), (6727, 12160), (6944, 11780), (7688, 10640), (8246, 9920), (8512, 9610), (8680, 9424)]