128366920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{291743}}^1$

素因数の和:291765

約数の個数: 32

約数和(自身を含む): 315083520

約数和(自身を除く): 186716600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 291743, 583486, 1166972, 1458715, 2333944, 2917430, 3209173, 5834860, 6418346, 11669720, 12836692, 16045865, 25673384, 32091730, 64183460, 128366920]

約数ペア:

[(1, 128366920), (2, 64183460), (4, 32091730), (5, 25673384), (8, 16045865), (10, 12836692), (11, 11669720), (20, 6418346), (22, 5834860), (40, 3209173), (44, 2917430), (55, 2333944), (88, 1458715), (110, 1166972), (220, 583486), (440, 291743)]