21064876

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22480724

約数列:

[1, 2, 4, 7, 14, 28, 79, 89, 107, 158, 178, 214, 316, 356, 428, 553, 623, 749, 1106, 1246, 1498, 2212, 2492, 2996, 7031, 8453, 9523, 14062, 16906, 19046, 28124, 33812, 38092, 49217, 59171, 66661, 98434, 118342, 133322, 196868, 236684, 266644, 752317, 1504634, 3009268, 5266219, 10532438, 21064876]

約数ペア:

[(1, 21064876), (2, 10532438), (4, 5266219), (7, 3009268), (14, 1504634), (28, 752317), (79, 266644), (89, 236684), (107, 196868), (158, 133322), (178, 118342), (214, 98434), (316, 66661), (356, 59171), (428, 49217), (553, 38092), (623, 33812), (749, 28124), (1106, 19046), (1246, 16906), (1498, 14062), (2212, 9523), (2492, 8453), (2996, 7031)]