81489195

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{499}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 149760000

約数和(自身を除く): 68270805

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 191, 285, 499, 573, 855, 955, 1497, 1719, 2495, 2865, 3629, 4491, 7485, 8595, 9481, 10887, 18145, 22455, 28443, 32661, 47405, 54435, 85329, 95309, 142215, 163305, 285927, 426645, 476545, 857781, 1429635, 1810871, 4288905, 5432613, 9054355, 16297839, 27163065, 81489195]

約数ペア:

[(1, 81489195), (3, 27163065), (5, 16297839), (9, 9054355), (15, 5432613), (19, 4288905), (45, 1810871), (57, 1429635), (95, 857781), (171, 476545), (191, 426645), (285, 285927), (499, 163305), (573, 142215), (855, 95309), (955, 85329), (1497, 54435), (1719, 47405), (2495, 32661), (2865, 28443), (3629, 22455), (4491, 18145), (7485, 10887), (8595, 9481)]