51390640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{563}}^1$

素因数の和:746

約数の個数: 80

約数和(自身を含む): 137634048

約数和(自身を除く): 86243408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 280, 326, 560, 563, 652, 815, 1126, 1141, 1304, 1630, 2252, 2282, 2608, 2815, 3260, 3941, 4504, 4564, 5630, 5705, 6520, 7882, 9008, 9128, 11260, 11410, 13040, 15764, 18256, 19705, 22520, 22820, 31528, 39410, 45040, 45640, 63056, 78820, 91280, 91769, 157640, 183538, 315280, 367076, 458845, 642383, 734152, 917690, 1284766, 1468304, 1835380, 2569532, 3211915, 3670760, 5139064, 6423830, 7341520, 10278128, 12847660, 25695320, 51390640]

約数ペア:

[(1, 51390640), (2, 25695320), (4, 12847660), (5, 10278128), (7, 7341520), (8, 6423830), (10, 5139064), (14, 3670760), (16, 3211915), (20, 2569532), (28, 1835380), (35, 1468304), (40, 1284766), (56, 917690), (70, 734152), (80, 642383), (112, 458845), (140, 367076), (163, 315280), (280, 183538), (326, 157640), (560, 91769), (563, 91280), (652, 78820), (815, 63056), (1126, 45640), (1141, 45040), (1304, 39410), (1630, 31528), (2252, 22820), (2282, 22520), (2608, 19705), (2815, 18256), (3260, 15764), (3941, 13040), (4504, 11410), (4564, 11260), (5630, 9128), (5705, 9008), (6520, 7882)]