56872420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 133527744

約数和(自身を除く): 76655324

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 220, 242, 284, 331, 355, 484, 605, 662, 710, 781, 1210, 1324, 1420, 1562, 1655, 2420, 3124, 3310, 3641, 3905, 6620, 7282, 7810, 8591, 14564, 15620, 17182, 18205, 23501, 34364, 36410, 40051, 42955, 47002, 72820, 80102, 85910, 94004, 117505, 160204, 171820, 200255, 235010, 258511, 400510, 470020, 517022, 801020, 1034044, 1292555, 2585110, 2843621, 5170220, 5687242, 11374484, 14218105, 28436210, 56872420]

約数ペア:

[(1, 56872420), (2, 28436210), (4, 14218105), (5, 11374484), (10, 5687242), (11, 5170220), (20, 2843621), (22, 2585110), (44, 1292555), (55, 1034044), (71, 801020), (110, 517022), (121, 470020), (142, 400510), (220, 258511), (242, 235010), (284, 200255), (331, 171820), (355, 160204), (484, 117505), (605, 94004), (662, 85910), (710, 80102), (781, 72820), (1210, 47002), (1324, 42955), (1420, 40051), (1562, 36410), (1655, 34364), (2420, 23501), (3124, 18205), (3310, 17182), (3641, 15620), (3905, 14564), (6620, 8591), (7282, 7810)]