21660568

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{523}}^1$

素因数の和:727

約数の個数: 32

約数和(自身を含む): 42255360

約数和(自身を除く): 20594792

約数列:

[1, 2, 4, 8, 31, 62, 124, 167, 248, 334, 523, 668, 1046, 1336, 2092, 4184, 5177, 10354, 16213, 20708, 32426, 41416, 64852, 87341, 129704, 174682, 349364, 698728, 2707571, 5415142, 10830284, 21660568]

約数ペア:

[(1, 21660568), (2, 10830284), (4, 5415142), (8, 2707571), (31, 698728), (62, 349364), (124, 174682), (167, 129704), (248, 87341), (334, 64852), (523, 41416), (668, 32426), (1046, 20708), (1336, 16213), (2092, 10354), (4184, 5177)]