400752080

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2011}}^1$

素因数の和:2124

約数の個数: 80

約数和(自身を含む): 970009344

約数和(自身を除く): 569257264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 53, 80, 94, 106, 188, 212, 235, 265, 376, 424, 470, 530, 752, 848, 940, 1060, 1880, 2011, 2120, 2491, 3760, 4022, 4240, 4982, 8044, 9964, 10055, 12455, 16088, 19928, 20110, 24910, 32176, 39856, 40220, 49820, 80440, 94517, 99640, 106583, 160880, 189034, 199280, 213166, 378068, 426332, 472585, 532915, 756136, 852664, 945170, 1065830, 1512272, 1705328, 1890340, 2131660, 3780680, 4263320, 5009401, 7561360, 8526640, 10018802, 20037604, 25047005, 40075208, 50094010, 80150416, 100188020, 200376040, 400752080]

約数ペア:

[(1, 400752080), (2, 200376040), (4, 100188020), (5, 80150416), (8, 50094010), (10, 40075208), (16, 25047005), (20, 20037604), (40, 10018802), (47, 8526640), (53, 7561360), (80, 5009401), (94, 4263320), (106, 3780680), (188, 2131660), (212, 1890340), (235, 1705328), (265, 1512272), (376, 1065830), (424, 945170), (470, 852664), (530, 756136), (752, 532915), (848, 472585), (940, 426332), (1060, 378068), (1880, 213166), (2011, 199280), (2120, 189034), (2491, 160880), (3760, 106583), (4022, 99640), (4240, 94517), (4982, 80440), (8044, 49820), (9964, 40220), (10055, 39856), (12455, 32176), (16088, 24910), (19928, 20110)]