25601180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 60328800

約数和(自身を除く): 34727620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 149, 220, 242, 284, 298, 355, 484, 596, 605, 710, 745, 781, 1210, 1420, 1490, 1562, 1639, 2420, 2980, 3124, 3278, 3905, 6556, 7810, 8195, 8591, 10579, 15620, 16390, 17182, 18029, 21158, 32780, 34364, 36058, 42316, 42955, 52895, 72116, 85910, 90145, 105790, 116369, 171820, 180290, 211580, 232738, 360580, 465476, 581845, 1163690, 1280059, 2327380, 2560118, 5120236, 6400295, 12800590, 25601180]

約数ペア:

[(1, 25601180), (2, 12800590), (4, 6400295), (5, 5120236), (10, 2560118), (11, 2327380), (20, 1280059), (22, 1163690), (44, 581845), (55, 465476), (71, 360580), (110, 232738), (121, 211580), (142, 180290), (149, 171820), (220, 116369), (242, 105790), (284, 90145), (298, 85910), (355, 72116), (484, 52895), (596, 42955), (605, 42316), (710, 36058), (745, 34364), (781, 32780), (1210, 21158), (1420, 18029), (1490, 17182), (1562, 16390), (1639, 15620), (2420, 10579), (2980, 8591), (3124, 8195), (3278, 7810), (3905, 6556)]