21990959939

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1\times {\mathrm{4513}}^1$

素因数の和:4971

約数の個数: 32

約数和(自身を含む): 25359290880

約数和(自身を除く): 3368330941

約数列:

[1, 13, 23, 43, 299, 379, 559, 989, 4513, 4927, 8717, 12857, 16297, 58669, 103799, 113321, 194059, 211861, 374831, 1349387, 1710427, 2522767, 4463357, 4872803, 22235551, 39339821, 58023641, 73548361, 511417673, 956128693, 1691612303, 21990959939]

約数ペア:

[(1, 21990959939), (13, 1691612303), (23, 956128693), (43, 511417673), (299, 73548361), (379, 58023641), (559, 39339821), (989, 22235551), (4513, 4872803), (4927, 4463357), (8717, 2522767), (12857, 1710427), (16297, 1349387), (58669, 374831), (103799, 211861), (113321, 194059)]