78654920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{1123}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 189371520

約数和(自身を除く): 110716600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 103, 136, 170, 206, 340, 412, 515, 680, 824, 1030, 1123, 1751, 2060, 2246, 3502, 4120, 4492, 5615, 7004, 8755, 8984, 11230, 14008, 17510, 19091, 22460, 35020, 38182, 44920, 70040, 76364, 95455, 115669, 152728, 190910, 231338, 381820, 462676, 578345, 763640, 925352, 1156690, 1966373, 2313380, 3932746, 4626760, 7865492, 9831865, 15730984, 19663730, 39327460, 78654920]

約数ペア:

[(1, 78654920), (2, 39327460), (4, 19663730), (5, 15730984), (8, 9831865), (10, 7865492), (17, 4626760), (20, 3932746), (34, 2313380), (40, 1966373), (68, 1156690), (85, 925352), (103, 763640), (136, 578345), (170, 462676), (206, 381820), (340, 231338), (412, 190910), (515, 152728), (680, 115669), (824, 95455), (1030, 76364), (1123, 70040), (1751, 44920), (2060, 38182), (2246, 35020), (3502, 22460), (4120, 19091), (4492, 17510), (5615, 14008), (7004, 11230), (8755, 8984)]