21128670

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7573}}^1$

素因数の和:7617

約数の個数: 48

約数和(自身を含む): 56714112

約数和(自身を除く): 35585442

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7573, 15146, 22719, 37865, 45438, 68157, 75730, 113595, 136314, 227190, 234763, 340785, 469526, 681570, 704289, 1173815, 1408578, 2112867, 2347630, 3521445, 4225734, 7042890, 10564335, 21128670]

約数ペア:

[(1, 21128670), (2, 10564335), (3, 7042890), (5, 4225734), (6, 3521445), (9, 2347630), (10, 2112867), (15, 1408578), (18, 1173815), (30, 704289), (31, 681570), (45, 469526), (62, 340785), (90, 234763), (93, 227190), (155, 136314), (186, 113595), (279, 75730), (310, 68157), (465, 45438), (558, 37865), (930, 22719), (1395, 15146), (2790, 7573)]