20743120

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8941}}^1$

素因数の和:8983

約数の個数: 40

約数和(自身を含む): 49896360

約数和(自身を除く): 29153240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8941, 17882, 35764, 44705, 71528, 89410, 143056, 178820, 259289, 357640, 518578, 715280, 1037156, 1296445, 2074312, 2592890, 4148624, 5185780, 10371560, 20743120]

約数ペア:

[(1, 20743120), (2, 10371560), (4, 5185780), (5, 4148624), (8, 2592890), (10, 2074312), (16, 1296445), (20, 1037156), (29, 715280), (40, 518578), (58, 357640), (80, 259289), (116, 178820), (145, 143056), (232, 89410), (290, 71528), (464, 44705), (580, 35764), (1160, 17882), (2320, 8941)]