198266680

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{647}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 459095040

約数和(自身を除く): 260828360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 163, 188, 235, 326, 376, 470, 647, 652, 815, 940, 1294, 1304, 1630, 1880, 2588, 3235, 3260, 5176, 6470, 6520, 7661, 12940, 15322, 25880, 30409, 30644, 38305, 60818, 61288, 76610, 105461, 121636, 152045, 153220, 210922, 243272, 304090, 306440, 421844, 527305, 608180, 843688, 1054610, 1216360, 2109220, 4218440, 4956667, 9913334, 19826668, 24783335, 39653336, 49566670, 99133340, 198266680]

約数ペア:

[(1, 198266680), (2, 99133340), (4, 49566670), (5, 39653336), (8, 24783335), (10, 19826668), (20, 9913334), (40, 4956667), (47, 4218440), (94, 2109220), (163, 1216360), (188, 1054610), (235, 843688), (326, 608180), (376, 527305), (470, 421844), (647, 306440), (652, 304090), (815, 243272), (940, 210922), (1294, 153220), (1304, 152045), (1630, 121636), (1880, 105461), (2588, 76610), (3235, 61288), (3260, 60818), (5176, 38305), (6470, 30644), (6520, 30409), (7661, 25880), (12940, 15322)]