131815840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:654

約数の個数: 96

約数和(自身を含む): 338688000

約数和(自身を除く): 206872160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 127, 130, 160, 208, 254, 260, 416, 499, 508, 520, 635, 998, 1016, 1040, 1270, 1651, 1996, 2032, 2080, 2495, 2540, 3302, 3992, 4064, 4990, 5080, 6487, 6604, 7984, 8255, 9980, 10160, 12974, 13208, 15968, 16510, 19960, 20320, 25948, 26416, 32435, 33020, 39920, 51896, 52832, 63373, 64870, 66040, 79840, 103792, 126746, 129740, 132080, 207584, 253492, 259480, 264160, 316865, 506984, 518960, 633730, 823849, 1013968, 1037920, 1267460, 1647698, 2027936, 2534920, 3295396, 4119245, 5069840, 6590792, 8238490, 10139680, 13181584, 16476980, 26363168, 32953960, 65907920, 131815840]

約数ペア:

[(1, 131815840), (2, 65907920), (4, 32953960), (5, 26363168), (8, 16476980), (10, 13181584), (13, 10139680), (16, 8238490), (20, 6590792), (26, 5069840), (32, 4119245), (40, 3295396), (52, 2534920), (65, 2027936), (80, 1647698), (104, 1267460), (127, 1037920), (130, 1013968), (160, 823849), (208, 633730), (254, 518960), (260, 506984), (416, 316865), (499, 264160), (508, 259480), (520, 253492), (635, 207584), (998, 132080), (1016, 129740), (1040, 126746), (1270, 103792), (1651, 79840), (1996, 66040), (2032, 64870), (2080, 63373), (2495, 52832), (2540, 51896), (3302, 39920), (3992, 33020), (4064, 32435), (4990, 26416), (5080, 25948), (6487, 20320), (6604, 19960), (7984, 16510), (8255, 15968), (9980, 13208), (10160, 12974)]