18975484

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 18764036

約数列:

[1, 2, 4, 11, 22, 44, 53, 79, 103, 106, 158, 206, 212, 316, 412, 583, 869, 1133, 1166, 1738, 2266, 2332, 3476, 4187, 4532, 5459, 8137, 8374, 10918, 16274, 16748, 21836, 32548, 46057, 60049, 89507, 92114, 120098, 179014, 184228, 240196, 358028, 431261, 862522, 1725044, 4743871, 9487742, 18975484]

約数ペア:

[(1, 18975484), (2, 9487742), (4, 4743871), (11, 1725044), (22, 862522), (44, 431261), (53, 358028), (79, 240196), (103, 184228), (106, 179014), (158, 120098), (206, 92114), (212, 89507), (316, 60049), (412, 46057), (583, 32548), (869, 21836), (1133, 16748), (1166, 16274), (1738, 10918), (2266, 8374), (2332, 8137), (3476, 5459), (4187, 4532)]