31230129

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2699}}^1$

素因数の和:2757

約数の個数: 32

約数和(自身を含む): 51840000

約数和(自身を除く): 20609871

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 2699, 3857, 8097, 11571, 18893, 51281, 56679, 78271, 153843, 234813, 358967, 547897, 1076901, 1487149, 1643691, 4461447, 10410043, 31230129]

約数ペア:

[(1, 31230129), (3, 10410043), (7, 4461447), (19, 1643691), (21, 1487149), (29, 1076901), (57, 547897), (87, 358967), (133, 234813), (203, 153843), (399, 78271), (551, 56679), (609, 51281), (1653, 18893), (2699, 11571), (3857, 8097)]