28704650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 72

約数和(自身を含む): 59906880

約数和(自身を除く): 31202230

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 79, 86, 130, 158, 169, 215, 325, 338, 395, 430, 559, 650, 790, 845, 1027, 1075, 1118, 1690, 1975, 2054, 2150, 2795, 3397, 3950, 4225, 5135, 5590, 6794, 7267, 8450, 10270, 13351, 13975, 14534, 16985, 25675, 26702, 27950, 33970, 36335, 44161, 51350, 66755, 72670, 84925, 88322, 133510, 169850, 181675, 220805, 333775, 363350, 441610, 574093, 667550, 1104025, 1148186, 2208050, 2870465, 5740930, 14352325, 28704650]

約数ペア:

[(1, 28704650), (2, 14352325), (5, 5740930), (10, 2870465), (13, 2208050), (25, 1148186), (26, 1104025), (43, 667550), (50, 574093), (65, 441610), (79, 363350), (86, 333775), (130, 220805), (158, 181675), (169, 169850), (215, 133510), (325, 88322), (338, 84925), (395, 72670), (430, 66755), (559, 51350), (650, 44161), (790, 36335), (845, 33970), (1027, 27950), (1075, 26702), (1118, 25675), (1690, 16985), (1975, 14534), (2054, 13975), (2150, 13351), (2795, 10270), (3397, 8450), (3950, 7267), (4225, 6794), (5135, 5590)]