81873440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4229}}^1$

素因数の和:4266

約数の個数: 72

約数和(自身を含む): 212659020

約数和(自身を除く): 130785580

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1760, 1936, 2420, 3872, 4229, 4840, 8458, 9680, 16916, 19360, 21145, 33832, 42290, 46519, 67664, 84580, 93038, 135328, 169160, 186076, 232595, 338320, 372152, 465190, 511709, 676640, 744304, 930380, 1023418, 1488608, 1860760, 2046836, 2558545, 3721520, 4093672, 5117090, 7443040, 8187344, 10234180, 16374688, 20468360, 40936720, 81873440]

約数ペア:

[(1, 81873440), (2, 40936720), (4, 20468360), (5, 16374688), (8, 10234180), (10, 8187344), (11, 7443040), (16, 5117090), (20, 4093672), (22, 3721520), (32, 2558545), (40, 2046836), (44, 1860760), (55, 1488608), (80, 1023418), (88, 930380), (110, 744304), (121, 676640), (160, 511709), (176, 465190), (220, 372152), (242, 338320), (352, 232595), (440, 186076), (484, 169160), (605, 135328), (880, 93038), (968, 84580), (1210, 67664), (1760, 46519), (1936, 42290), (2420, 33832), (3872, 21145), (4229, 19360), (4840, 16916), (8458, 9680)]