81813400

素因数分解:

$2^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{3221}}^1$

素因数の和:3364

約数の個数: 48

約数和(自身を含む): 191773440

約数和(自身を除く): 109960040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 127, 200, 254, 508, 635, 1016, 1270, 2540, 3175, 3221, 5080, 6350, 6442, 12700, 12884, 16105, 25400, 25768, 32210, 64420, 80525, 128840, 161050, 322100, 409067, 644200, 818134, 1636268, 2045335, 3272536, 4090670, 8181340, 10226675, 16362680, 20453350, 40906700, 81813400]

約数ペア:

[(1, 81813400), (2, 40906700), (4, 20453350), (5, 16362680), (8, 10226675), (10, 8181340), (20, 4090670), (25, 3272536), (40, 2045335), (50, 1636268), (100, 818134), (127, 644200), (200, 409067), (254, 322100), (508, 161050), (635, 128840), (1016, 80525), (1270, 64420), (2540, 32210), (3175, 25768), (3221, 25400), (5080, 16105), (6350, 12884), (6442, 12700)]