64379920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:664

約数の個数: 80

約数和(自身を含む): 164721600

約数和(自身を除く): 100341680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 149, 176, 220, 298, 440, 491, 596, 745, 880, 982, 1192, 1490, 1639, 1964, 2384, 2455, 2980, 3278, 3928, 4910, 5401, 5960, 6556, 7856, 8195, 9820, 10802, 11920, 13112, 16390, 19640, 21604, 26224, 27005, 32780, 39280, 43208, 54010, 65560, 73159, 86416, 108020, 131120, 146318, 216040, 292636, 365795, 432080, 585272, 731590, 804749, 1170544, 1463180, 1609498, 2926360, 3218996, 4023745, 5852720, 6437992, 8047490, 12875984, 16094980, 32189960, 64379920]

約数ペア:

[(1, 64379920), (2, 32189960), (4, 16094980), (5, 12875984), (8, 8047490), (10, 6437992), (11, 5852720), (16, 4023745), (20, 3218996), (22, 2926360), (40, 1609498), (44, 1463180), (55, 1170544), (80, 804749), (88, 731590), (110, 585272), (149, 432080), (176, 365795), (220, 292636), (298, 216040), (440, 146318), (491, 131120), (596, 108020), (745, 86416), (880, 73159), (982, 65560), (1192, 54010), (1490, 43208), (1639, 39280), (1964, 32780), (2384, 27005), (2455, 26224), (2980, 21604), (3278, 19640), (3928, 16390), (4910, 13112), (5401, 11920), (5960, 10802), (6556, 9820), (7856, 8195)]