156939820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1399}}^1$

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 338688000

約数和(自身を除く): 181748180

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 284, 316, 355, 395, 710, 790, 1399, 1420, 1580, 2798, 5596, 5609, 6995, 11218, 13990, 22436, 27980, 28045, 56090, 99329, 110521, 112180, 198658, 221042, 397316, 442084, 496645, 552605, 993290, 1105210, 1986580, 2210420, 7846991, 15693982, 31387964, 39234955, 78469910, 156939820]

約数ペア:

[(1, 156939820), (2, 78469910), (4, 39234955), (5, 31387964), (10, 15693982), (20, 7846991), (71, 2210420), (79, 1986580), (142, 1105210), (158, 993290), (284, 552605), (316, 496645), (355, 442084), (395, 397316), (710, 221042), (790, 198658), (1399, 112180), (1420, 110521), (1580, 99329), (2798, 56090), (5596, 28045), (5609, 27980), (6995, 22436), (11218, 13990)]