21237260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2609}}^1$

素因数の和:2666

約数の個数: 48

約数和(自身を含む): 49986720

約数和(自身を除く): 28749460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2609, 4070, 5218, 8140, 10436, 13045, 26090, 28699, 52180, 57398, 96533, 114796, 143495, 193066, 286990, 386132, 482665, 573980, 965330, 1061863, 1930660, 2123726, 4247452, 5309315, 10618630, 21237260]

約数ペア:

[(1, 21237260), (2, 10618630), (4, 5309315), (5, 4247452), (10, 2123726), (11, 1930660), (20, 1061863), (22, 965330), (37, 573980), (44, 482665), (55, 386132), (74, 286990), (110, 193066), (148, 143495), (185, 114796), (220, 96533), (370, 57398), (407, 52180), (740, 28699), (814, 26090), (1628, 13045), (2035, 10436), (2609, 8140), (4070, 5218)]