18885820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{367}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 41545728

約数和(自身を除く): 22659908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 367, 415, 620, 734, 830, 1468, 1660, 1835, 2573, 3670, 5146, 7340, 10292, 11377, 12865, 22754, 25730, 30461, 45508, 51460, 56885, 60922, 113770, 121844, 152305, 227540, 304610, 609220, 944291, 1888582, 3777164, 4721455, 9442910, 18885820]

約数ペア:

[(1, 18885820), (2, 9442910), (4, 4721455), (5, 3777164), (10, 1888582), (20, 944291), (31, 609220), (62, 304610), (83, 227540), (124, 152305), (155, 121844), (166, 113770), (310, 60922), (332, 56885), (367, 51460), (415, 45508), (620, 30461), (734, 25730), (830, 22754), (1468, 12865), (1660, 11377), (1835, 10292), (2573, 7340), (3670, 5146)]