31943691

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 52450944

約数和(自身を除く): 20507253

約数列:

[1, 3, 9, 13, 37, 39, 47, 111, 117, 141, 157, 333, 423, 471, 481, 611, 1413, 1443, 1739, 1833, 2041, 4329, 5217, 5499, 5809, 6123, 7379, 15651, 17427, 18369, 22137, 22607, 52281, 66411, 67821, 75517, 95927, 203463, 226551, 273023, 287781, 679653, 819069, 863343, 2457207, 3549299, 10647897, 31943691]

約数ペア:

[(1, 31943691), (3, 10647897), (9, 3549299), (13, 2457207), (37, 863343), (39, 819069), (47, 679653), (111, 287781), (117, 273023), (141, 226551), (157, 203463), (333, 95927), (423, 75517), (471, 67821), (481, 66411), (611, 52281), (1413, 22607), (1443, 22137), (1739, 18369), (1833, 17427), (2041, 15651), (4329, 7379), (5217, 6123), (5499, 5809)]