981385720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^3\times {\mathrm{73}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 2748448800

約数和(自身を除く): 1767063080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 73, 76, 95, 98, 133, 140, 146, 152, 190, 196, 245, 266, 280, 292, 361, 365, 380, 392, 490, 511, 532, 584, 665, 722, 730, 760, 931, 980, 1022, 1064, 1330, 1387, 1444, 1460, 1805, 1862, 1960, 2044, 2527, 2555, 2660, 2774, 2888, 2920, 3577, 3610, 3724, 4088, 4655, 5054, 5110, 5320, 5548, 6859, 6935, 7154, 7220, 7448, 9310, 9709, 10108, 10220, 11096, 12635, 13718, 13870, 14308, 14440, 17689, 17885, 18620, 19418, 20216, 20440, 25270, 26353, 27436, 27740, 28616, 34295, 35378, 35770, 37240, 38836, 48013, 48545, 50540, 52706, 54872, 55480, 67963, 68590, 70756, 71540, 77672, 88445, 96026, 97090, 101080, 105412, 131765, 135926, 137180, 141512, 143080, 176890, 184471, 192052, 194180, 210824, 240065, 263530, 271852, 274360, 336091, 339815, 353780, 368942, 384104, 388360, 480130, 500707, 527060, 543704, 672182, 679630, 707560, 737884, 922355, 960260, 1001414, 1054120, 1291297, 1344364, 1359260, 1475768, 1680455, 1844710, 1920520, 2002828, 2503535, 2582594, 2688728, 2718520, 3360910, 3504949, 3689420, 4005656, 5007070, 5165188, 6456485, 6721820, 7009898, 7378840, 10014140, 10330376, 12912970, 13443640, 14019796, 17524745, 20028280, 24534643, 25825940, 28039592, 35049490, 49069286, 51651880, 70098980, 98138572, 122673215, 140197960, 196277144, 245346430, 490692860, 981385720]

約数ペア:

[(1, 981385720), (2, 490692860), (4, 245346430), (5, 196277144), (7, 140197960), (8, 122673215), (10, 98138572), (14, 70098980), (19, 51651880), (20, 49069286), (28, 35049490), (35, 28039592), (38, 25825940), (40, 24534643), (49, 20028280), (56, 17524745), (70, 14019796), (73, 13443640), (76, 12912970), (95, 10330376), (98, 10014140), (133, 7378840), (140, 7009898), (146, 6721820), (152, 6456485), (190, 5165188), (196, 5007070), (245, 4005656), (266, 3689420), (280, 3504949), (292, 3360910), (361, 2718520), (365, 2688728), (380, 2582594), (392, 2503535), (490, 2002828), (511, 1920520), (532, 1844710), (584, 1680455), (665, 1475768), (722, 1359260), (730, 1344364), (760, 1291297), (931, 1054120), (980, 1001414), (1022, 960260), (1064, 922355), (1330, 737884), (1387, 707560), (1444, 679630), (1460, 672182), (1805, 543704), (1862, 527060), (1960, 500707), (2044, 480130), (2527, 388360), (2555, 384104), (2660, 368942), (2774, 353780), (2888, 339815), (2920, 336091), (3577, 274360), (3610, 271852), (3724, 263530), (4088, 240065), (4655, 210824), (5054, 194180), (5110, 192052), (5320, 184471), (5548, 176890), (6859, 143080), (6935, 141512), (7154, 137180), (7220, 135926), (7448, 131765), (9310, 105412), (9709, 101080), (10108, 97090), (10220, 96026), (11096, 88445), (12635, 77672), (13718, 71540), (13870, 70756), (14308, 68590), (14440, 67963), (17689, 55480), (17885, 54872), (18620, 52706), (19418, 50540), (20216, 48545), (20440, 48013), (25270, 38836), (26353, 37240), (27436, 35770), (27740, 35378), (28616, 34295)]