81908090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{3529}}^1$

素因数の和:3758

約数の個数: 32

約数和(自身を含む): 161645760

約数和(自身を除く): 79737670

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 211, 422, 1055, 2110, 2321, 3529, 4642, 7058, 11605, 17645, 23210, 35290, 38819, 77638, 194095, 388190, 744619, 1489238, 3723095, 7446190, 8190809, 16381618, 40954045, 81908090]

約数ペア:

[(1, 81908090), (2, 40954045), (5, 16381618), (10, 8190809), (11, 7446190), (22, 3723095), (55, 1489238), (110, 744619), (211, 388190), (422, 194095), (1055, 77638), (2110, 38819), (2321, 35290), (3529, 23210), (4642, 17645), (7058, 11605)]