19798956

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 52450944

約数和(自身を除く): 32651988

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 113, 124, 157, 186, 226, 279, 314, 339, 372, 452, 471, 558, 628, 678, 942, 1017, 1116, 1356, 1413, 1884, 2034, 2826, 3503, 4068, 4867, 5652, 7006, 9734, 10509, 14012, 14601, 17741, 19468, 21018, 29202, 31527, 35482, 42036, 43803, 53223, 58404, 63054, 70964, 87606, 106446, 126108, 159669, 175212, 212892, 319338, 549971, 638676, 1099942, 1649913, 2199884, 3299826, 4949739, 6599652, 9899478, 19798956]

約数ペア:

[(1, 19798956), (2, 9899478), (3, 6599652), (4, 4949739), (6, 3299826), (9, 2199884), (12, 1649913), (18, 1099942), (31, 638676), (36, 549971), (62, 319338), (93, 212892), (113, 175212), (124, 159669), (157, 126108), (186, 106446), (226, 87606), (279, 70964), (314, 63054), (339, 58404), (372, 53223), (452, 43803), (471, 42036), (558, 35482), (628, 31527), (678, 29202), (942, 21018), (1017, 19468), (1116, 17741), (1356, 14601), (1413, 14012), (1884, 10509), (2034, 9734), (2826, 7006), (3503, 5652), (4068, 4867)]