21519172

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{2749}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 40040000

約数和(自身を除く): 18520828

約数列:

[1, 2, 4, 19, 38, 76, 103, 206, 412, 1957, 2749, 3914, 5498, 7828, 10996, 52231, 104462, 208924, 283147, 566294, 1132588, 5379793, 10759586, 21519172]

約数ペア:

[(1, 21519172), (2, 10759586), (4, 5379793), (19, 1132588), (38, 566294), (76, 283147), (103, 208924), (206, 104462), (412, 52231), (1957, 10996), (2749, 7828), (3914, 5498)]