21844405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 30855168

約数和(自身を除く): 9010763

約数列:

[1, 5, 11, 17, 55, 61, 85, 187, 305, 383, 671, 935, 1037, 1915, 3355, 4213, 5185, 6511, 11407, 21065, 23363, 32555, 57035, 71621, 116815, 256993, 358105, 397171, 1284965, 1985855, 4368881, 21844405]

約数ペア:

[(1, 21844405), (5, 4368881), (11, 1985855), (17, 1284965), (55, 397171), (61, 358105), (85, 256993), (187, 116815), (305, 71621), (383, 57035), (671, 32555), (935, 23363), (1037, 21065), (1915, 11407), (3355, 6511), (4213, 5185)]