15561380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 35535360

約数和(自身を除く): 19973980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1321, 2356, 2642, 2945, 5284, 5890, 6605, 11780, 13210, 25099, 26420, 40951, 50198, 81902, 100396, 125495, 163804, 204755, 250990, 409510, 501980, 778069, 819020, 1556138, 3112276, 3890345, 7780690, 15561380]

約数ペア:

[(1, 15561380), (2, 7780690), (4, 3890345), (5, 3112276), (10, 1556138), (19, 819020), (20, 778069), (31, 501980), (38, 409510), (62, 250990), (76, 204755), (95, 163804), (124, 125495), (155, 100396), (190, 81902), (310, 50198), (380, 40951), (589, 26420), (620, 25099), (1178, 13210), (1321, 11780), (2356, 6605), (2642, 5890), (2945, 5284)]