20357080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16417}}^1$

素因数の和:16459

約数の個数: 32

約数和(自身を含む): 47283840

約数和(自身を除く): 26926760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16417, 32834, 65668, 82085, 131336, 164170, 328340, 508927, 656680, 1017854, 2035708, 2544635, 4071416, 5089270, 10178540, 20357080]

約数ペア:

[(1, 20357080), (2, 10178540), (4, 5089270), (5, 4071416), (8, 2544635), (10, 2035708), (20, 1017854), (31, 656680), (40, 508927), (62, 328340), (124, 164170), (155, 131336), (248, 82085), (310, 65668), (620, 32834), (1240, 16417)]