20745558

素因数分解:

$2^1\times 3^4\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1714

約数の個数: 40

約数和(自身を含む): 47102880

約数和(自身を除く): 26357322

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 79, 81, 158, 162, 237, 474, 711, 1422, 1621, 2133, 3242, 4266, 4863, 6399, 9726, 12798, 14589, 29178, 43767, 87534, 128059, 131301, 256118, 262602, 384177, 768354, 1152531, 2305062, 3457593, 6915186, 10372779, 20745558]

約数ペア:

[(1, 20745558), (2, 10372779), (3, 6915186), (6, 3457593), (9, 2305062), (18, 1152531), (27, 768354), (54, 384177), (79, 262602), (81, 256118), (158, 131301), (162, 128059), (237, 87534), (474, 43767), (711, 29178), (1422, 14589), (1621, 12798), (2133, 9726), (3242, 6399), (4266, 4863)]