20052890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 43666560

約数和(自身を除く): 23613670

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 37, 55, 65, 74, 110, 130, 143, 185, 286, 370, 379, 407, 481, 715, 758, 814, 962, 1430, 1895, 2035, 2405, 3790, 4070, 4169, 4810, 4927, 5291, 8338, 9854, 10582, 14023, 20845, 24635, 26455, 28046, 41690, 49270, 52910, 54197, 70115, 108394, 140230, 154253, 182299, 270985, 308506, 364598, 541970, 771265, 911495, 1542530, 1822990, 2005289, 4010578, 10026445, 20052890]

約数ペア:

[(1, 20052890), (2, 10026445), (5, 4010578), (10, 2005289), (11, 1822990), (13, 1542530), (22, 911495), (26, 771265), (37, 541970), (55, 364598), (65, 308506), (74, 270985), (110, 182299), (130, 154253), (143, 140230), (185, 108394), (286, 70115), (370, 54197), (379, 52910), (407, 49270), (481, 41690), (715, 28046), (758, 26455), (814, 24635), (962, 20845), (1430, 14023), (1895, 10582), (2035, 9854), (2405, 8338), (3790, 5291), (4070, 4927), (4169, 4810)]