19972530

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{709}}^1$

素因数の和:1035

約数の個数: 48

約数和(自身を含む): 52167960

約数和(自身を除く): 32195430

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 313, 626, 709, 939, 1418, 1565, 1878, 2127, 2817, 3130, 3545, 4254, 4695, 5634, 6381, 7090, 9390, 10635, 12762, 14085, 21270, 28170, 31905, 63810, 221917, 443834, 665751, 1109585, 1331502, 1997253, 2219170, 3328755, 3994506, 6657510, 9986265, 19972530]

約数ペア:

[(1, 19972530), (2, 9986265), (3, 6657510), (5, 3994506), (6, 3328755), (9, 2219170), (10, 1997253), (15, 1331502), (18, 1109585), (30, 665751), (45, 443834), (90, 221917), (313, 63810), (626, 31905), (709, 28170), (939, 21270), (1418, 14085), (1565, 12762), (1878, 10635), (2127, 9390), (2817, 7090), (3130, 6381), (3545, 5634), (4254, 4695)]