71315920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1459}}^1$

素因数の和:1532

約数の個数: 80

約数和(自身を含む): 182488320

約数和(自身を除く): 111172400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 80, 94, 104, 130, 188, 208, 235, 260, 376, 470, 520, 611, 752, 940, 1040, 1222, 1459, 1880, 2444, 2918, 3055, 3760, 4888, 5836, 6110, 7295, 9776, 11672, 12220, 14590, 18967, 23344, 24440, 29180, 37934, 48880, 58360, 68573, 75868, 94835, 116720, 137146, 151736, 189670, 274292, 303472, 342865, 379340, 548584, 685730, 758680, 891449, 1097168, 1371460, 1517360, 1782898, 2742920, 3565796, 4457245, 5485840, 7131592, 8914490, 14263184, 17828980, 35657960, 71315920]

約数ペア:

[(1, 71315920), (2, 35657960), (4, 17828980), (5, 14263184), (8, 8914490), (10, 7131592), (13, 5485840), (16, 4457245), (20, 3565796), (26, 2742920), (40, 1782898), (47, 1517360), (52, 1371460), (65, 1097168), (80, 891449), (94, 758680), (104, 685730), (130, 548584), (188, 379340), (208, 342865), (235, 303472), (260, 274292), (376, 189670), (470, 151736), (520, 137146), (611, 116720), (752, 94835), (940, 75868), (1040, 68573), (1222, 58360), (1459, 48880), (1880, 37934), (2444, 29180), (2918, 24440), (3055, 23344), (3760, 18967), (4888, 14590), (5836, 12220), (6110, 11672), (7295, 9776)]