21415156

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2953}}^1$

素因数の和:3008

約数の個数: 36

約数和(自身を含む): 44788548

約数和(自身を除く): 23373392

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2953, 3626, 5906, 7252, 11812, 20671, 41342, 82684, 109261, 144697, 218522, 289394, 437044, 578788, 764827, 1529654, 3059308, 5353789, 10707578, 21415156]

約数ペア:

[(1, 21415156), (2, 10707578), (4, 5353789), (7, 3059308), (14, 1529654), (28, 764827), (37, 578788), (49, 437044), (74, 289394), (98, 218522), (148, 144697), (196, 109261), (259, 82684), (518, 41342), (1036, 20671), (1813, 11812), (2953, 7252), (3626, 5906)]