18854440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:682

約数の個数: 64

約数和(自身を含む): 46992960

約数和(自身を除く): 28138520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 587, 730, 803, 1174, 1460, 1606, 2348, 2920, 2935, 3212, 4015, 4696, 5870, 6424, 6457, 8030, 11740, 12914, 16060, 23480, 25828, 32120, 32285, 42851, 51656, 64570, 85702, 129140, 171404, 214255, 258280, 342808, 428510, 471361, 857020, 942722, 1714040, 1885444, 2356805, 3770888, 4713610, 9427220, 18854440]

約数ペア:

[(1, 18854440), (2, 9427220), (4, 4713610), (5, 3770888), (8, 2356805), (10, 1885444), (11, 1714040), (20, 942722), (22, 857020), (40, 471361), (44, 428510), (55, 342808), (73, 258280), (88, 214255), (110, 171404), (146, 129140), (220, 85702), (292, 64570), (365, 51656), (440, 42851), (584, 32285), (587, 32120), (730, 25828), (803, 23480), (1174, 16060), (1460, 12914), (1606, 11740), (2348, 8030), (2920, 6457), (2935, 6424), (3212, 5870), (4015, 4696)]