78210100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:373

約数の個数: 72

約数和(自身を含む): 177723000

約数和(自身を除く): 99512900

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 149, 181, 290, 298, 362, 580, 596, 724, 725, 745, 905, 1450, 1490, 1810, 2900, 2980, 3620, 3725, 4321, 4525, 5249, 7450, 8642, 9050, 10498, 14900, 17284, 18100, 20996, 21605, 26245, 26969, 43210, 52490, 53938, 86420, 104980, 107876, 108025, 131225, 134845, 216050, 262450, 269690, 432100, 524900, 539380, 674225, 782101, 1348450, 1564202, 2696900, 3128404, 3910505, 7821010, 15642020, 19552525, 39105050, 78210100]

約数ペア:

[(1, 78210100), (2, 39105050), (4, 19552525), (5, 15642020), (10, 7821010), (20, 3910505), (25, 3128404), (29, 2696900), (50, 1564202), (58, 1348450), (100, 782101), (116, 674225), (145, 539380), (149, 524900), (181, 432100), (290, 269690), (298, 262450), (362, 216050), (580, 134845), (596, 131225), (724, 108025), (725, 107876), (745, 104980), (905, 86420), (1450, 53938), (1490, 52490), (1810, 43210), (2900, 26969), (2980, 26245), (3620, 21605), (3725, 20996), (4321, 18100), (4525, 17284), (5249, 14900), (7450, 10498), (8642, 9050)]