641567120

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1\times {\mathrm{449}}^1$

素因数の和:852

約数の個数: 80

約数和(自身を含む): 1527692400

約数和(自身を除く): 886125280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 337, 424, 449, 530, 674, 848, 898, 1060, 1348, 1685, 1796, 2120, 2245, 2696, 3370, 3592, 4240, 4490, 5392, 6740, 7184, 8980, 13480, 17861, 17960, 23797, 26960, 35722, 35920, 47594, 71444, 89305, 95188, 118985, 142888, 151313, 178610, 190376, 237970, 285776, 302626, 357220, 380752, 475940, 605252, 714440, 756565, 951880, 1210504, 1428880, 1513130, 1903760, 2421008, 3026260, 6052520, 8019589, 12105040, 16039178, 32078356, 40097945, 64156712, 80195890, 128313424, 160391780, 320783560, 641567120]

約数ペア:

[(1, 641567120), (2, 320783560), (4, 160391780), (5, 128313424), (8, 80195890), (10, 64156712), (16, 40097945), (20, 32078356), (40, 16039178), (53, 12105040), (80, 8019589), (106, 6052520), (212, 3026260), (265, 2421008), (337, 1903760), (424, 1513130), (449, 1428880), (530, 1210504), (674, 951880), (848, 756565), (898, 714440), (1060, 605252), (1348, 475940), (1685, 380752), (1796, 357220), (2120, 302626), (2245, 285776), (2696, 237970), (3370, 190376), (3592, 178610), (4240, 151313), (4490, 142888), (5392, 118985), (6740, 95188), (7184, 89305), (8980, 71444), (13480, 47594), (17861, 35920), (17960, 35722), (23797, 26960)]