20557998

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 72

約数和(自身を含む): 49690368

約数和(自身を除く): 29132370

約数列:

[1, 2, 3, 6, 9, 17, 18, 23, 34, 46, 51, 69, 102, 127, 138, 153, 207, 254, 306, 381, 391, 414, 529, 762, 782, 1058, 1143, 1173, 1587, 2159, 2286, 2346, 2921, 3174, 3519, 4318, 4761, 5842, 6477, 7038, 8763, 8993, 9522, 12954, 17526, 17986, 19431, 26289, 26979, 38862, 49657, 52578, 53958, 67183, 80937, 99314, 134366, 148971, 161874, 201549, 297942, 403098, 446913, 604647, 893826, 1142111, 1209294, 2284222, 3426333, 6852666, 10278999, 20557998]

約数ペア:

[(1, 20557998), (2, 10278999), (3, 6852666), (6, 3426333), (9, 2284222), (17, 1209294), (18, 1142111), (23, 893826), (34, 604647), (46, 446913), (51, 403098), (69, 297942), (102, 201549), (127, 161874), (138, 148971), (153, 134366), (207, 99314), (254, 80937), (306, 67183), (381, 53958), (391, 52578), (414, 49657), (529, 38862), (762, 26979), (782, 26289), (1058, 19431), (1143, 17986), (1173, 17526), (1587, 12954), (2159, 9522), (2286, 8993), (2346, 8763), (2921, 7038), (3174, 6477), (3519, 5842), (4318, 4761)]