78945880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{967}}^1$

素因数の和:1148

約数の個数: 64

約数和(自身を含む): 192709440

約数和(自身を除く): 113763560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 520, 628, 785, 967, 1256, 1570, 1934, 2041, 3140, 3868, 4082, 4835, 6280, 7736, 8164, 9670, 10205, 12571, 16328, 19340, 20410, 25142, 38680, 40820, 50284, 62855, 81640, 100568, 125710, 151819, 251420, 303638, 502840, 607276, 759095, 1214552, 1518190, 1973647, 3036380, 3947294, 6072760, 7894588, 9868235, 15789176, 19736470, 39472940, 78945880]

約数ペア:

[(1, 78945880), (2, 39472940), (4, 19736470), (5, 15789176), (8, 9868235), (10, 7894588), (13, 6072760), (20, 3947294), (26, 3036380), (40, 1973647), (52, 1518190), (65, 1214552), (104, 759095), (130, 607276), (157, 502840), (260, 303638), (314, 251420), (520, 151819), (628, 125710), (785, 100568), (967, 81640), (1256, 62855), (1570, 50284), (1934, 40820), (2041, 38680), (3140, 25142), (3868, 20410), (4082, 19340), (4835, 16328), (6280, 12571), (7736, 10205), (8164, 9670)]