81047120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:313

約数の個数: 160

約数和(自身を含む): 239984640

約数和(自身を除く): 158937520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 59, 70, 77, 80, 88, 110, 112, 118, 140, 154, 176, 220, 223, 236, 280, 295, 308, 385, 413, 440, 446, 472, 560, 590, 616, 649, 770, 826, 880, 892, 944, 1115, 1180, 1232, 1298, 1540, 1561, 1652, 1784, 2065, 2230, 2360, 2453, 2596, 3080, 3122, 3245, 3304, 3568, 4130, 4460, 4543, 4720, 4906, 5192, 6160, 6244, 6490, 6608, 7805, 8260, 8920, 9086, 9812, 10384, 12265, 12488, 12980, 13157, 15610, 16520, 17171, 17840, 18172, 19624, 22715, 24530, 24976, 25960, 26314, 31220, 33040, 34342, 36344, 39248, 45430, 49060, 51920, 52628, 62440, 65785, 68684, 72688, 85855, 90860, 92099, 98120, 105256, 124880, 131570, 137368, 144727, 171710, 181720, 184198, 196240, 210512, 263140, 274736, 289454, 343420, 363440, 368396, 460495, 526280, 578908, 686840, 723635, 736792, 920990, 1013089, 1052560, 1157816, 1373680, 1447270, 1473584, 1841980, 2026178, 2315632, 2894540, 3683960, 4052356, 5065445, 5789080, 7367920, 8104712, 10130890, 11578160, 16209424, 20261780, 40523560, 81047120]

約数ペア:

[(1, 81047120), (2, 40523560), (4, 20261780), (5, 16209424), (7, 11578160), (8, 10130890), (10, 8104712), (11, 7367920), (14, 5789080), (16, 5065445), (20, 4052356), (22, 3683960), (28, 2894540), (35, 2315632), (40, 2026178), (44, 1841980), (55, 1473584), (56, 1447270), (59, 1373680), (70, 1157816), (77, 1052560), (80, 1013089), (88, 920990), (110, 736792), (112, 723635), (118, 686840), (140, 578908), (154, 526280), (176, 460495), (220, 368396), (223, 363440), (236, 343420), (280, 289454), (295, 274736), (308, 263140), (385, 210512), (413, 196240), (440, 184198), (446, 181720), (472, 171710), (560, 144727), (590, 137368), (616, 131570), (649, 124880), (770, 105256), (826, 98120), (880, 92099), (892, 90860), (944, 85855), (1115, 72688), (1180, 68684), (1232, 65785), (1298, 62440), (1540, 52628), (1561, 51920), (1652, 49060), (1784, 45430), (2065, 39248), (2230, 36344), (2360, 34342), (2453, 33040), (2596, 31220), (3080, 26314), (3122, 25960), (3245, 24976), (3304, 24530), (3568, 22715), (4130, 19624), (4460, 18172), (4543, 17840), (4720, 17171), (4906, 16520), (5192, 15610), (6160, 13157), (6244, 12980), (6490, 12488), (6608, 12265), (7805, 10384), (8260, 9812), (8920, 9086)]