19501980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17107}}^1$

素因数の和:17138

約数の個数: 48

約数和(自身を含む): 57482880

約数和(自身を除く): 37980900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 17107, 34214, 51321, 68428, 85535, 102642, 171070, 205284, 256605, 325033, 342140, 513210, 650066, 975099, 1026420, 1300132, 1625165, 1950198, 3250330, 3900396, 4875495, 6500660, 9750990, 19501980]

約数ペア:

[(1, 19501980), (2, 9750990), (3, 6500660), (4, 4875495), (5, 3900396), (6, 3250330), (10, 1950198), (12, 1625165), (15, 1300132), (19, 1026420), (20, 975099), (30, 650066), (38, 513210), (57, 342140), (60, 325033), (76, 256605), (95, 205284), (114, 171070), (190, 102642), (228, 85535), (285, 68428), (380, 51321), (570, 34214), (1140, 17107)]