21154308

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3547}}^1$

素因数の和:3632

約数の個数: 48

約数和(自身を含む): 57222144

約数和(自身を除く): 36067836

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3547, 5964, 7094, 10641, 14188, 21282, 24829, 42564, 49658, 74487, 99316, 148974, 251837, 297948, 503674, 755511, 1007348, 1511022, 1762859, 3022044, 3525718, 5288577, 7051436, 10577154, 21154308]

約数ペア:

[(1, 21154308), (2, 10577154), (3, 7051436), (4, 5288577), (6, 3525718), (7, 3022044), (12, 1762859), (14, 1511022), (21, 1007348), (28, 755511), (42, 503674), (71, 297948), (84, 251837), (142, 148974), (213, 99316), (284, 74487), (426, 49658), (497, 42564), (852, 24829), (994, 21282), (1491, 14188), (1988, 10641), (2982, 7094), (3547, 5964)]