12820700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 29529360

約数和(自身を除く): 16708660

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 53, 59, 82, 100, 106, 118, 164, 205, 212, 236, 265, 295, 410, 530, 590, 820, 1025, 1060, 1180, 1325, 1475, 2050, 2173, 2419, 2650, 2950, 3127, 4100, 4346, 4838, 5300, 5900, 6254, 8692, 9676, 10865, 12095, 12508, 15635, 21730, 24190, 31270, 43460, 48380, 54325, 60475, 62540, 78175, 108650, 120950, 128207, 156350, 217300, 241900, 256414, 312700, 512828, 641035, 1282070, 2564140, 3205175, 6410350, 12820700]

約数ペア:

[(1, 12820700), (2, 6410350), (4, 3205175), (5, 2564140), (10, 1282070), (20, 641035), (25, 512828), (41, 312700), (50, 256414), (53, 241900), (59, 217300), (82, 156350), (100, 128207), (106, 120950), (118, 108650), (164, 78175), (205, 62540), (212, 60475), (236, 54325), (265, 48380), (295, 43460), (410, 31270), (530, 24190), (590, 21730), (820, 15635), (1025, 12508), (1060, 12095), (1180, 10865), (1325, 9676), (1475, 8692), (2050, 6254), (2173, 5900), (2419, 5300), (2650, 4838), (2950, 4346), (3127, 4100)]