21412180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 48335616

約数和(自身を除く): 26923436

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 887, 1207, 1420, 1774, 2414, 3548, 4435, 4828, 6035, 8870, 12070, 15079, 17740, 24140, 30158, 60316, 62977, 75395, 125954, 150790, 251908, 301580, 314885, 629770, 1070609, 1259540, 2141218, 4282436, 5353045, 10706090, 21412180]

約数ペア:

[(1, 21412180), (2, 10706090), (4, 5353045), (5, 4282436), (10, 2141218), (17, 1259540), (20, 1070609), (34, 629770), (68, 314885), (71, 301580), (85, 251908), (142, 150790), (170, 125954), (284, 75395), (340, 62977), (355, 60316), (710, 30158), (887, 24140), (1207, 17740), (1420, 15079), (1774, 12070), (2414, 8870), (3548, 6035), (4435, 4828)]