81594920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4523}}^1$

素因数の和:4586

約数の個数: 64

約数和(自身を含む): 205208640

約数和(自身を除く): 123613720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 4510, 4523, 9020, 9046, 18040, 18092, 22615, 36184, 45230, 49753, 90460, 99506, 180920, 185443, 199012, 248765, 370886, 398024, 497530, 741772, 927215, 995060, 1483544, 1854430, 1990120, 2039873, 3708860, 4079746, 7417720, 8159492, 10199365, 16318984, 20398730, 40797460, 81594920]

約数ペア:

[(1, 81594920), (2, 40797460), (4, 20398730), (5, 16318984), (8, 10199365), (10, 8159492), (11, 7417720), (20, 4079746), (22, 3708860), (40, 2039873), (41, 1990120), (44, 1854430), (55, 1483544), (82, 995060), (88, 927215), (110, 741772), (164, 497530), (205, 398024), (220, 370886), (328, 248765), (410, 199012), (440, 185443), (451, 180920), (820, 99506), (902, 90460), (1640, 49753), (1804, 45230), (2255, 36184), (3608, 22615), (4510, 18092), (4523, 18040), (9020, 9046)]