21218312

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1753}}^1$

素因数の和:1865

約数の個数: 32

約数和(自身を含む): 42622200

約数和(自身を除く): 21403888

約数列:

[1, 2, 4, 8, 17, 34, 68, 89, 136, 178, 356, 712, 1513, 1753, 3026, 3506, 6052, 7012, 12104, 14024, 29801, 59602, 119204, 156017, 238408, 312034, 624068, 1248136, 2652289, 5304578, 10609156, 21218312]

約数ペア:

[(1, 21218312), (2, 10609156), (4, 5304578), (8, 2652289), (17, 1248136), (34, 624068), (68, 312034), (89, 238408), (136, 156017), (178, 119204), (356, 59602), (712, 29801), (1513, 14024), (1753, 12104), (3026, 7012), (3506, 6052)]