20147580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1$

素因数の和:835

約数の個数: 72

約数和(自身を含む): 61562592

約数和(自身を除く): 41415012

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 173, 180, 346, 519, 647, 692, 865, 1038, 1294, 1557, 1730, 1941, 2076, 2588, 2595, 3114, 3235, 3460, 3882, 5190, 5823, 6228, 6470, 7764, 7785, 9705, 10380, 11646, 12940, 15570, 19410, 23292, 29115, 31140, 38820, 58230, 111931, 116460, 223862, 335793, 447724, 559655, 671586, 1007379, 1119310, 1343172, 1678965, 2014758, 2238620, 3357930, 4029516, 5036895, 6715860, 10073790, 20147580]

約数ペア:

[(1, 20147580), (2, 10073790), (3, 6715860), (4, 5036895), (5, 4029516), (6, 3357930), (9, 2238620), (10, 2014758), (12, 1678965), (15, 1343172), (18, 1119310), (20, 1007379), (30, 671586), (36, 559655), (45, 447724), (60, 335793), (90, 223862), (173, 116460), (180, 111931), (346, 58230), (519, 38820), (647, 31140), (692, 29115), (865, 23292), (1038, 19410), (1294, 15570), (1557, 12940), (1730, 11646), (1941, 10380), (2076, 9705), (2588, 7785), (2595, 7764), (3114, 6470), (3235, 6228), (3460, 5823), (3882, 5190)]