128413780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1061

約数の個数: 96

約数和(自身を含む): 319979520

約数和(自身を除く): 191565740

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 124, 155, 190, 209, 220, 310, 341, 380, 418, 589, 620, 682, 836, 991, 1045, 1178, 1364, 1705, 1982, 2090, 2356, 2945, 3410, 3964, 4180, 4955, 5890, 6479, 6820, 9910, 10901, 11780, 12958, 18829, 19820, 21802, 25916, 30721, 32395, 37658, 43604, 54505, 61442, 64790, 75316, 94145, 109010, 122884, 129580, 153605, 188290, 207119, 218020, 307210, 337931, 376580, 414238, 583699, 614420, 675862, 828476, 1035595, 1167398, 1351724, 1689655, 2071190, 2334796, 2918495, 3379310, 4142380, 5836990, 6420689, 6758620, 11673980, 12841378, 25682756, 32103445, 64206890, 128413780]

約数ペア:

[(1, 128413780), (2, 64206890), (4, 32103445), (5, 25682756), (10, 12841378), (11, 11673980), (19, 6758620), (20, 6420689), (22, 5836990), (31, 4142380), (38, 3379310), (44, 2918495), (55, 2334796), (62, 2071190), (76, 1689655), (95, 1351724), (110, 1167398), (124, 1035595), (155, 828476), (190, 675862), (209, 614420), (220, 583699), (310, 414238), (341, 376580), (380, 337931), (418, 307210), (589, 218020), (620, 207119), (682, 188290), (836, 153605), (991, 129580), (1045, 122884), (1178, 109010), (1364, 94145), (1705, 75316), (1982, 64790), (2090, 61442), (2356, 54505), (2945, 43604), (3410, 37658), (3964, 32395), (4180, 30721), (4955, 25916), (5890, 21802), (6479, 19820), (6820, 18829), (9910, 12958), (10901, 11780)]