21179277

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6343}}^1$

素因数の和:6409

約数の個数: 24

約数和(自身を含む): 35627904

約数和(自身を除く): 14448627

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6343, 19029, 44401, 57087, 133203, 336179, 399609, 1008537, 2353253, 3025611, 7059759, 21179277]

約数ペア:

[(1, 21179277), (3, 7059759), (7, 3025611), (9, 2353253), (21, 1008537), (53, 399609), (63, 336179), (159, 133203), (371, 57087), (477, 44401), (1113, 19029), (3339, 6343)]