61981480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{140867}}^1$

素因数の和:140889

約数の個数: 32

約数和(自身を含む): 152137440

約数和(自身を除く): 90155960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 140867, 281734, 563468, 704335, 1126936, 1408670, 1549537, 2817340, 3099074, 5634680, 6198148, 7747685, 12396296, 15495370, 30990740, 61981480]

約数ペア:

[(1, 61981480), (2, 30990740), (4, 15495370), (5, 12396296), (8, 7747685), (10, 6198148), (11, 5634680), (20, 3099074), (22, 2817340), (40, 1549537), (44, 1408670), (55, 1126936), (88, 704335), (110, 563468), (220, 281734), (440, 140867)]