20187402588

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{518743}}^1$

素因数の和:518823

約数の個数: 72

約数和(自身を含む): 54380971008

約数和(自身を除く): 34193568420

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 47, 69, 92, 94, 138, 141, 188, 207, 276, 282, 414, 423, 564, 828, 846, 1081, 1692, 2162, 3243, 4324, 6486, 9729, 12972, 19458, 38916, 518743, 1037486, 1556229, 2074972, 3112458, 4668687, 6224916, 9337374, 11931089, 18674748, 23862178, 24380921, 35793267, 47724356, 48761842, 71586534, 73142763, 97523684, 107379801, 143173068, 146285526, 214759602, 219428289, 292571052, 429519204, 438856578, 560761183, 877713156, 1121522366, 1682283549, 2243044732, 3364567098, 5046850647, 6729134196, 10093701294, 20187402588]

約数ペア:

[(1, 20187402588), (2, 10093701294), (3, 6729134196), (4, 5046850647), (6, 3364567098), (9, 2243044732), (12, 1682283549), (18, 1121522366), (23, 877713156), (36, 560761183), (46, 438856578), (47, 429519204), (69, 292571052), (92, 219428289), (94, 214759602), (138, 146285526), (141, 143173068), (188, 107379801), (207, 97523684), (276, 73142763), (282, 71586534), (414, 48761842), (423, 47724356), (564, 35793267), (828, 24380921), (846, 23862178), (1081, 18674748), (1692, 11931089), (2162, 9337374), (3243, 6224916), (4324, 4668687), (6486, 3112458), (9729, 2074972), (12972, 1556229), (19458, 1037486), (38916, 518743)]