19431990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3041}}^1$

素因数の和:3125

約数の個数: 48

約数和(自身を含む): 51251616

約数和(自身を除く): 31819626

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3041, 3195, 6082, 6390, 9123, 15205, 18246, 27369, 30410, 45615, 54738, 91230, 136845, 215911, 273690, 431822, 647733, 1079555, 1295466, 1943199, 2159110, 3238665, 3886398, 6477330, 9715995, 19431990]

約数ペア:

[(1, 19431990), (2, 9715995), (3, 6477330), (5, 3886398), (6, 3238665), (9, 2159110), (10, 1943199), (15, 1295466), (18, 1079555), (30, 647733), (45, 431822), (71, 273690), (90, 215911), (142, 136845), (213, 91230), (355, 54738), (426, 45615), (639, 30410), (710, 27369), (1065, 18246), (1278, 15205), (2130, 9123), (3041, 6390), (3195, 6082)]