66989900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{16339}}^1$

素因数の和:16394

約数の個数: 36

約数和(自身を含む): 148922760

約数和(自身を除く): 81932860

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 16339, 32678, 65356, 81695, 163390, 326780, 408475, 669899, 816950, 1339798, 1633900, 2679596, 3349495, 6698990, 13397980, 16747475, 33494950, 66989900]

約数ペア:

[(1, 66989900), (2, 33494950), (4, 16747475), (5, 13397980), (10, 6698990), (20, 3349495), (25, 2679596), (41, 1633900), (50, 1339798), (82, 816950), (100, 669899), (164, 408475), (205, 326780), (410, 163390), (820, 81695), (1025, 65356), (2050, 32678), (4100, 16339)]