20790832

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 41997312

約数和(自身を除く): 21206480

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 167, 248, 251, 334, 496, 502, 668, 1004, 1336, 2008, 2672, 4016, 5177, 7781, 10354, 15562, 20708, 31124, 41416, 41917, 62248, 82832, 83834, 124496, 167668, 335336, 670672, 1299427, 2598854, 5197708, 10395416, 20790832]

約数ペア:

[(1, 20790832), (2, 10395416), (4, 5197708), (8, 2598854), (16, 1299427), (31, 670672), (62, 335336), (124, 167668), (167, 124496), (248, 83834), (251, 82832), (334, 62248), (496, 41917), (502, 41416), (668, 31124), (1004, 20708), (1336, 15562), (2008, 10354), (2672, 7781), (4016, 5177)]