65709880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 153316800

約数和(自身を除く): 87606920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 103, 164, 205, 206, 328, 389, 410, 412, 515, 778, 820, 824, 1030, 1556, 1640, 1945, 2060, 3112, 3890, 4120, 4223, 7780, 8446, 15560, 15949, 16892, 21115, 31898, 33784, 40067, 42230, 63796, 79745, 80134, 84460, 127592, 159490, 160268, 168920, 200335, 318980, 320536, 400670, 637960, 801340, 1602680, 1642747, 3285494, 6570988, 8213735, 13141976, 16427470, 32854940, 65709880]

約数ペア:

[(1, 65709880), (2, 32854940), (4, 16427470), (5, 13141976), (8, 8213735), (10, 6570988), (20, 3285494), (40, 1642747), (41, 1602680), (82, 801340), (103, 637960), (164, 400670), (205, 320536), (206, 318980), (328, 200335), (389, 168920), (410, 160268), (412, 159490), (515, 127592), (778, 84460), (820, 80134), (824, 79745), (1030, 63796), (1556, 42230), (1640, 40067), (1945, 33784), (2060, 31898), (3112, 21115), (3890, 16892), (4120, 15949), (4223, 15560), (7780, 8446)]