21529431

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:732

約数の個数: 48

約数和(自身を含む): 39656448

約数和(自身を除く): 18127017

約数列:

[1, 3, 7, 9, 11, 21, 33, 47, 63, 77, 99, 141, 231, 329, 423, 517, 661, 693, 987, 1551, 1983, 2961, 3619, 4627, 4653, 5949, 7271, 10857, 13881, 21813, 31067, 32571, 41643, 50897, 65439, 93201, 152691, 217469, 279603, 341737, 458073, 652407, 1025211, 1957221, 2392159, 3075633, 7176477, 21529431]

約数ペア:

[(1, 21529431), (3, 7176477), (7, 3075633), (9, 2392159), (11, 1957221), (21, 1025211), (33, 652407), (47, 458073), (63, 341737), (77, 279603), (99, 217469), (141, 152691), (231, 93201), (329, 65439), (423, 50897), (517, 41643), (661, 32571), (693, 31067), (987, 21813), (1551, 13881), (1983, 10857), (2961, 7271), (3619, 5949), (4627, 4653)]