21225080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17117}}^1$

素因数の和:17159

約数の個数: 32

約数和(自身を含む): 49299840

約数和(自身を除く): 28074760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17117, 34234, 68468, 85585, 136936, 171170, 342340, 530627, 684680, 1061254, 2122508, 2653135, 4245016, 5306270, 10612540, 21225080]

約数ペア:

[(1, 21225080), (2, 10612540), (4, 5306270), (5, 4245016), (8, 2653135), (10, 2122508), (20, 1061254), (31, 684680), (40, 530627), (62, 342340), (124, 171170), (155, 136936), (248, 85585), (310, 68468), (620, 34234), (1240, 17117)]