19995774

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 44706816

約数和(自身を除く): 24711042

約数列:

[1, 2, 3, 6, 17, 34, 43, 47, 51, 86, 94, 97, 102, 129, 141, 194, 258, 282, 291, 582, 731, 799, 1462, 1598, 1649, 2021, 2193, 2397, 3298, 4042, 4171, 4386, 4559, 4794, 4947, 6063, 8342, 9118, 9894, 12126, 12513, 13677, 25026, 27354, 34357, 68714, 70907, 77503, 103071, 141814, 155006, 196037, 206142, 212721, 232509, 392074, 425442, 465018, 588111, 1176222, 3332629, 6665258, 9997887, 19995774]

約数ペア:

[(1, 19995774), (2, 9997887), (3, 6665258), (6, 3332629), (17, 1176222), (34, 588111), (43, 465018), (47, 425442), (51, 392074), (86, 232509), (94, 212721), (97, 206142), (102, 196037), (129, 155006), (141, 141814), (194, 103071), (258, 77503), (282, 70907), (291, 68714), (582, 34357), (731, 27354), (799, 25026), (1462, 13677), (1598, 12513), (1649, 12126), (2021, 9894), (2193, 9118), (2397, 8342), (3298, 6063), (4042, 4947), (4171, 4794), (4386, 4559)]