19617380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 22839580

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 107, 178, 206, 214, 356, 412, 428, 445, 515, 535, 890, 1030, 1070, 1780, 2060, 2140, 9167, 9523, 11021, 18334, 19046, 22042, 36668, 38092, 44084, 45835, 47615, 55105, 91670, 95230, 110210, 183340, 190460, 220420, 980869, 1961738, 3923476, 4904345, 9808690, 19617380]

約数ペア:

[(1, 19617380), (2, 9808690), (4, 4904345), (5, 3923476), (10, 1961738), (20, 980869), (89, 220420), (103, 190460), (107, 183340), (178, 110210), (206, 95230), (214, 91670), (356, 55105), (412, 47615), (428, 45835), (445, 44084), (515, 38092), (535, 36668), (890, 22042), (1030, 19046), (1070, 18334), (1780, 11021), (2060, 9523), (2140, 9167)]