21638837

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 24

約数和(自身を含む): 25738560

約数和(自身を除く): 4099723

約数列:

[1, 11, 23, 31, 89, 253, 341, 713, 961, 979, 2047, 2759, 7843, 10571, 22103, 22517, 30349, 63457, 85529, 243133, 698027, 940819, 1967167, 21638837]

約数ペア:

[(1, 21638837), (11, 1967167), (23, 940819), (31, 698027), (89, 243133), (253, 85529), (341, 63457), (713, 30349), (961, 22517), (979, 22103), (2047, 10571), (2759, 7843)]