81119920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8521}}^1$

素因数の和:8558

約数の個数: 80

約数和(自身を含む): 228253248

約数和(自身を除く): 147133328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2380, 4760, 8521, 9520, 17042, 34084, 42605, 59647, 68168, 85210, 119294, 136336, 144857, 170420, 238588, 289714, 298235, 340840, 477176, 579428, 596470, 681680, 724285, 954352, 1013999, 1158856, 1192940, 1448570, 2027998, 2317712, 2385880, 2897140, 4055996, 4771760, 5069995, 5794280, 8111992, 10139990, 11588560, 16223984, 20279980, 40559960, 81119920]

約数ペア:

[(1, 81119920), (2, 40559960), (4, 20279980), (5, 16223984), (7, 11588560), (8, 10139990), (10, 8111992), (14, 5794280), (16, 5069995), (17, 4771760), (20, 4055996), (28, 2897140), (34, 2385880), (35, 2317712), (40, 2027998), (56, 1448570), (68, 1192940), (70, 1158856), (80, 1013999), (85, 954352), (112, 724285), (119, 681680), (136, 596470), (140, 579428), (170, 477176), (238, 340840), (272, 298235), (280, 289714), (340, 238588), (476, 170420), (560, 144857), (595, 136336), (680, 119294), (952, 85210), (1190, 68168), (1360, 59647), (1904, 42605), (2380, 34084), (4760, 17042), (8521, 9520)]