12781960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18797}}^1$

素因数の和:18825

約数の個数: 32

約数和(自身を含む): 30452760

約数和(自身を除く): 17670800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 18797, 37594, 75188, 93985, 150376, 187970, 319549, 375940, 639098, 751880, 1278196, 1597745, 2556392, 3195490, 6390980, 12781960]

約数ペア:

[(1, 12781960), (2, 6390980), (4, 3195490), (5, 2556392), (8, 1597745), (10, 1278196), (17, 751880), (20, 639098), (34, 375940), (40, 319549), (68, 187970), (85, 150376), (136, 93985), (170, 75188), (340, 37594), (680, 18797)]