21145656

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{17981}}^1$

素因数の和:18004

約数の個数: 48

約数和(自身を含む): 61498440

約数和(自身を除く): 40352784

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 294, 392, 588, 1176, 17981, 35962, 53943, 71924, 107886, 125867, 143848, 215772, 251734, 377601, 431544, 503468, 755202, 881069, 1006936, 1510404, 1762138, 2643207, 3020808, 3524276, 5286414, 7048552, 10572828, 21145656]

約数ペア:

[(1, 21145656), (2, 10572828), (3, 7048552), (4, 5286414), (6, 3524276), (7, 3020808), (8, 2643207), (12, 1762138), (14, 1510404), (21, 1006936), (24, 881069), (28, 755202), (42, 503468), (49, 431544), (56, 377601), (84, 251734), (98, 215772), (147, 143848), (168, 125867), (196, 107886), (294, 71924), (392, 53943), (588, 35962), (1176, 17981)]