128267960

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 294727680

約数和(自身を除く): 166459720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 163, 191, 206, 326, 382, 412, 515, 652, 764, 815, 824, 955, 1030, 1304, 1528, 1630, 1910, 2060, 3260, 3820, 4120, 6520, 7640, 16789, 19673, 31133, 33578, 39346, 62266, 67156, 78692, 83945, 98365, 124532, 134312, 155665, 157384, 167890, 196730, 249064, 311330, 335780, 393460, 622660, 671560, 786920, 1245320, 3206699, 6413398, 12826796, 16033495, 25653592, 32066990, 64133980, 128267960]

約数ペア:

[(1, 128267960), (2, 64133980), (4, 32066990), (5, 25653592), (8, 16033495), (10, 12826796), (20, 6413398), (40, 3206699), (103, 1245320), (163, 786920), (191, 671560), (206, 622660), (326, 393460), (382, 335780), (412, 311330), (515, 249064), (652, 196730), (764, 167890), (815, 157384), (824, 155665), (955, 134312), (1030, 124532), (1304, 98365), (1528, 83945), (1630, 78692), (1910, 67156), (2060, 62266), (3260, 39346), (3820, 33578), (4120, 31133), (6520, 19673), (7640, 16789)]