138864620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{491}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 297561600

約数和(自身を除く): 158696980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 179, 316, 358, 395, 491, 716, 790, 895, 982, 1580, 1790, 1964, 2455, 3580, 4910, 9820, 14141, 28282, 38789, 56564, 70705, 77578, 87889, 141410, 155156, 175778, 193945, 282820, 351556, 387890, 439445, 775780, 878890, 1757780, 6943231, 13886462, 27772924, 34716155, 69432310, 138864620]

約数ペア:

[(1, 138864620), (2, 69432310), (4, 34716155), (5, 27772924), (10, 13886462), (20, 6943231), (79, 1757780), (158, 878890), (179, 775780), (316, 439445), (358, 387890), (395, 351556), (491, 282820), (716, 193945), (790, 175778), (895, 155156), (982, 141410), (1580, 87889), (1790, 77578), (1964, 70705), (2455, 56564), (3580, 38789), (4910, 28282), (9820, 14141)]