640121040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{68389}}^1$

素因数の和:68421

約数の個数: 120

約数和(自身を含む): 2315138280

約数和(自身を除く): 1675017240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2340, 3120, 4680, 9360, 68389, 136778, 205167, 273556, 341945, 410334, 547112, 615501, 683890, 820668, 889057, 1025835, 1094224, 1231002, 1367780, 1641336, 1778114, 2051670, 2462004, 2667171, 2735560, 3077505, 3282672, 3556228, 4103340, 4445285, 4924008, 5334342, 5471120, 6155010, 7112456, 8001513, 8206680, 8890570, 9848016, 10668684, 12310020, 13335855, 14224912, 16003026, 16413360, 17781140, 21337368, 24620040, 26671710, 32006052, 35562280, 40007565, 42674736, 49240080, 53343420, 64012104, 71124560, 80015130, 106686840, 128024208, 160030260, 213373680, 320060520, 640121040]

約数ペア:

[(1, 640121040), (2, 320060520), (3, 213373680), (4, 160030260), (5, 128024208), (6, 106686840), (8, 80015130), (9, 71124560), (10, 64012104), (12, 53343420), (13, 49240080), (15, 42674736), (16, 40007565), (18, 35562280), (20, 32006052), (24, 26671710), (26, 24620040), (30, 21337368), (36, 17781140), (39, 16413360), (40, 16003026), (45, 14224912), (48, 13335855), (52, 12310020), (60, 10668684), (65, 9848016), (72, 8890570), (78, 8206680), (80, 8001513), (90, 7112456), (104, 6155010), (117, 5471120), (120, 5334342), (130, 4924008), (144, 4445285), (156, 4103340), (180, 3556228), (195, 3282672), (208, 3077505), (234, 2735560), (240, 2667171), (260, 2462004), (312, 2051670), (360, 1778114), (390, 1641336), (468, 1367780), (520, 1231002), (585, 1094224), (624, 1025835), (720, 889057), (780, 820668), (936, 683890), (1040, 615501), (1170, 547112), (1560, 410334), (1872, 341945), (2340, 273556), (3120, 205167), (4680, 136778), (9360, 68389)]