399785840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:287

約数の個数: 120

約数和(自身を含む): 997793280

約数和(自身を除く): 598007440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 109, 127, 152, 190, 218, 254, 304, 361, 380, 436, 508, 545, 635, 722, 760, 872, 1016, 1090, 1270, 1444, 1520, 1744, 1805, 2032, 2071, 2180, 2413, 2540, 2888, 3610, 4142, 4360, 4826, 5080, 5776, 7220, 8284, 8720, 9652, 10160, 10355, 12065, 13843, 14440, 16568, 19304, 20710, 24130, 27686, 28880, 33136, 38608, 39349, 41420, 45847, 48260, 55372, 69215, 78698, 82840, 91694, 96520, 110744, 138430, 157396, 165680, 183388, 193040, 196745, 221488, 229235, 263017, 276860, 314792, 366776, 393490, 458470, 526034, 553720, 629584, 733552, 786980, 916940, 1052068, 1107440, 1315085, 1573960, 1833880, 2104136, 2630170, 3147920, 3667760, 4208272, 4997323, 5260340, 9994646, 10520680, 19989292, 21041360, 24986615, 39978584, 49973230, 79957168, 99946460, 199892920, 399785840]

約数ペア:

[(1, 399785840), (2, 199892920), (4, 99946460), (5, 79957168), (8, 49973230), (10, 39978584), (16, 24986615), (19, 21041360), (20, 19989292), (38, 10520680), (40, 9994646), (76, 5260340), (80, 4997323), (95, 4208272), (109, 3667760), (127, 3147920), (152, 2630170), (190, 2104136), (218, 1833880), (254, 1573960), (304, 1315085), (361, 1107440), (380, 1052068), (436, 916940), (508, 786980), (545, 733552), (635, 629584), (722, 553720), (760, 526034), (872, 458470), (1016, 393490), (1090, 366776), (1270, 314792), (1444, 276860), (1520, 263017), (1744, 229235), (1805, 221488), (2032, 196745), (2071, 193040), (2180, 183388), (2413, 165680), (2540, 157396), (2888, 138430), (3610, 110744), (4142, 96520), (4360, 91694), (4826, 82840), (5080, 78698), (5776, 69215), (7220, 55372), (8284, 48260), (8720, 45847), (9652, 41420), (10160, 39349), (10355, 38608), (12065, 33136), (13843, 28880), (14440, 27686), (16568, 24130), (19304, 20710)]