21831453

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 37679616

約数和(自身を除く): 15848163

約数列:

[1, 3, 7, 9, 21, 47, 63, 73, 101, 141, 219, 303, 329, 423, 511, 657, 707, 909, 987, 1533, 2121, 2961, 3431, 4599, 4747, 6363, 7373, 10293, 14241, 22119, 24017, 30879, 33229, 42723, 51611, 66357, 72051, 99687, 154833, 216153, 299061, 346531, 464499, 1039593, 2425717, 3118779, 7277151, 21831453]

約数ペア:

[(1, 21831453), (3, 7277151), (7, 3118779), (9, 2425717), (21, 1039593), (47, 464499), (63, 346531), (73, 299061), (101, 216153), (141, 154833), (219, 99687), (303, 72051), (329, 66357), (423, 51611), (511, 42723), (657, 33229), (707, 30879), (909, 24017), (987, 22119), (1533, 14241), (2121, 10293), (2961, 7373), (3431, 6363), (4599, 4747)]