42808100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 97446888

約数和(自身を除く): 54638788

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 53, 82, 100, 106, 164, 197, 205, 212, 265, 394, 410, 530, 788, 820, 985, 1025, 1060, 1325, 1970, 2050, 2173, 2650, 3940, 4100, 4346, 4925, 5300, 8077, 8692, 9850, 10441, 10865, 16154, 19700, 20882, 21730, 32308, 40385, 41764, 43460, 52205, 54325, 80770, 104410, 108650, 161540, 201925, 208820, 217300, 261025, 403850, 428081, 522050, 807700, 856162, 1044100, 1712324, 2140405, 4280810, 8561620, 10702025, 21404050, 42808100]

約数ペア:

[(1, 42808100), (2, 21404050), (4, 10702025), (5, 8561620), (10, 4280810), (20, 2140405), (25, 1712324), (41, 1044100), (50, 856162), (53, 807700), (82, 522050), (100, 428081), (106, 403850), (164, 261025), (197, 217300), (205, 208820), (212, 201925), (265, 161540), (394, 108650), (410, 104410), (530, 80770), (788, 54325), (820, 52205), (985, 43460), (1025, 41764), (1060, 40385), (1325, 32308), (1970, 21730), (2050, 20882), (2173, 19700), (2650, 16154), (3940, 10865), (4100, 10441), (4346, 9850), (4925, 8692), (5300, 8077)]