78555880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7951}}^1$

素因数の和:7994

約数の個数: 64

約数和(自身を含む): 200390400

約数和(自身を除く): 121834520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 7951, 9880, 15902, 31804, 39755, 63608, 79510, 103363, 151069, 159020, 206726, 302138, 318040, 413452, 516815, 604276, 755345, 826904, 1033630, 1208552, 1510690, 1963897, 2067260, 3021380, 3927794, 4134520, 6042760, 7855588, 9819485, 15711176, 19638970, 39277940, 78555880]

約数ペア:

[(1, 78555880), (2, 39277940), (4, 19638970), (5, 15711176), (8, 9819485), (10, 7855588), (13, 6042760), (19, 4134520), (20, 3927794), (26, 3021380), (38, 2067260), (40, 1963897), (52, 1510690), (65, 1208552), (76, 1033630), (95, 826904), (104, 755345), (130, 604276), (152, 516815), (190, 413452), (247, 318040), (260, 302138), (380, 206726), (494, 159020), (520, 151069), (760, 103363), (988, 79510), (1235, 63608), (1976, 39755), (2470, 31804), (4940, 15902), (7951, 9880)]