31386920

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2917}}^1$

素因数の和:3197

約数の個数: 32

約数和(自身を含む): 70907400

約数和(自身を除く): 39520480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 2917, 5380, 5834, 10760, 11668, 14585, 23336, 29170, 58340, 116680, 784673, 1569346, 3138692, 3923365, 6277384, 7846730, 15693460, 31386920]

約数ペア:

[(1, 31386920), (2, 15693460), (4, 7846730), (5, 6277384), (8, 3923365), (10, 3138692), (20, 1569346), (40, 784673), (269, 116680), (538, 58340), (1076, 29170), (1345, 23336), (2152, 14585), (2690, 11668), (2917, 10760), (5380, 5834)]