20720580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8423}}^1$

素因数の和:8476

約数の個数: 48

約数和(自身を含む): 59439744

約数和(自身を除く): 38719164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8423, 16846, 25269, 33692, 42115, 50538, 84230, 101076, 126345, 168460, 252690, 345343, 505380, 690686, 1036029, 1381372, 1726715, 2072058, 3453430, 4144116, 5180145, 6906860, 10360290, 20720580]

約数ペア:

[(1, 20720580), (2, 10360290), (3, 6906860), (4, 5180145), (5, 4144116), (6, 3453430), (10, 2072058), (12, 1726715), (15, 1381372), (20, 1036029), (30, 690686), (41, 505380), (60, 345343), (82, 252690), (123, 168460), (164, 126345), (205, 101076), (246, 84230), (410, 50538), (492, 42115), (615, 33692), (820, 25269), (1230, 16846), (2460, 8423)]