21242040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{773}}^1$

素因数の和:1016

約数の個数: 64

約数和(自身を含む): 64087200

約数和(自身を除く): 42845160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 229, 458, 687, 773, 916, 1145, 1374, 1546, 1832, 2290, 2319, 2748, 3092, 3435, 3865, 4580, 4638, 5496, 6184, 6870, 7730, 9160, 9276, 11595, 13740, 15460, 18552, 23190, 27480, 30920, 46380, 92760, 177017, 354034, 531051, 708068, 885085, 1062102, 1416136, 1770170, 2124204, 2655255, 3540340, 4248408, 5310510, 7080680, 10621020, 21242040]

約数ペア:

[(1, 21242040), (2, 10621020), (3, 7080680), (4, 5310510), (5, 4248408), (6, 3540340), (8, 2655255), (10, 2124204), (12, 1770170), (15, 1416136), (20, 1062102), (24, 885085), (30, 708068), (40, 531051), (60, 354034), (120, 177017), (229, 92760), (458, 46380), (687, 30920), (773, 27480), (916, 23190), (1145, 18552), (1374, 15460), (1546, 13740), (1832, 11595), (2290, 9276), (2319, 9160), (2748, 7730), (3092, 6870), (3435, 6184), (3865, 5496), (4580, 4638)]