18918460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{761}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 43781472

約数和(自身を除く): 24863012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 761, 1130, 1243, 1522, 2260, 2486, 3044, 3805, 4972, 6215, 7610, 8371, 12430, 15220, 16742, 24860, 33484, 41855, 83710, 85993, 167420, 171986, 343972, 429965, 859930, 945923, 1719860, 1891846, 3783692, 4729615, 9459230, 18918460]

約数ペア:

[(1, 18918460), (2, 9459230), (4, 4729615), (5, 3783692), (10, 1891846), (11, 1719860), (20, 945923), (22, 859930), (44, 429965), (55, 343972), (110, 171986), (113, 167420), (220, 85993), (226, 83710), (452, 41855), (565, 33484), (761, 24860), (1130, 16742), (1243, 15220), (1522, 12430), (2260, 8371), (2486, 7610), (3044, 6215), (3805, 4972)]