1728980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 4112640

約数和(自身を除く): 2383660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 271, 290, 319, 542, 580, 638, 1084, 1276, 1355, 1595, 2710, 2981, 3190, 5420, 5962, 6380, 7859, 11924, 14905, 15718, 29810, 31436, 39295, 59620, 78590, 86449, 157180, 172898, 345796, 432245, 864490, 1728980]

約数ペア:

[(1, 1728980), (2, 864490), (4, 432245), (5, 345796), (10, 172898), (11, 157180), (20, 86449), (22, 78590), (29, 59620), (44, 39295), (55, 31436), (58, 29810), (110, 15718), (116, 14905), (145, 11924), (220, 7859), (271, 6380), (290, 5962), (319, 5420), (542, 3190), (580, 2981), (638, 2710), (1084, 1595), (1276, 1355)]