21163996

素因数分解:

$2^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{6689}}^1$

素因数の和:6813

約数の個数: 24

約数和(自身を含む): 42708960

約数和(自身を除く): 21544964

約数列:

[1, 2, 4, 7, 14, 28, 113, 226, 452, 791, 1582, 3164, 6689, 13378, 26756, 46823, 93646, 187292, 755857, 1511714, 3023428, 5290999, 10581998, 21163996]

約数ペア:

[(1, 21163996), (2, 10581998), (4, 5290999), (7, 3023428), (14, 1511714), (28, 755857), (113, 187292), (226, 93646), (452, 46823), (791, 26756), (1582, 13378), (3164, 6689)]