81899840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:520

約数の個数: 112

約数和(自身を含む): 217261440

約数和(自身を除く): 135361600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 53, 55, 64, 80, 88, 106, 110, 160, 176, 212, 220, 265, 320, 352, 424, 439, 440, 530, 583, 704, 848, 878, 880, 1060, 1166, 1696, 1756, 1760, 2120, 2195, 2332, 2915, 3392, 3512, 3520, 4240, 4390, 4664, 4829, 5830, 7024, 8480, 8780, 9328, 9658, 11660, 14048, 16960, 17560, 18656, 19316, 23267, 23320, 24145, 28096, 35120, 37312, 38632, 46534, 46640, 48290, 70240, 77264, 93068, 93280, 96580, 116335, 140480, 154528, 186136, 186560, 193160, 232670, 255937, 309056, 372272, 386320, 465340, 511874, 744544, 772640, 930680, 1023748, 1279685, 1489088, 1545280, 1861360, 2047496, 2559370, 3722720, 4094992, 5118740, 7445440, 8189984, 10237480, 16379968, 20474960, 40949920, 81899840]

約数ペア:

[(1, 81899840), (2, 40949920), (4, 20474960), (5, 16379968), (8, 10237480), (10, 8189984), (11, 7445440), (16, 5118740), (20, 4094992), (22, 3722720), (32, 2559370), (40, 2047496), (44, 1861360), (53, 1545280), (55, 1489088), (64, 1279685), (80, 1023748), (88, 930680), (106, 772640), (110, 744544), (160, 511874), (176, 465340), (212, 386320), (220, 372272), (265, 309056), (320, 255937), (352, 232670), (424, 193160), (439, 186560), (440, 186136), (530, 154528), (583, 140480), (704, 116335), (848, 96580), (878, 93280), (880, 93068), (1060, 77264), (1166, 70240), (1696, 48290), (1756, 46640), (1760, 46534), (2120, 38632), (2195, 37312), (2332, 35120), (2915, 28096), (3392, 24145), (3512, 23320), (3520, 23267), (4240, 19316), (4390, 18656), (4664, 17560), (4829, 16960), (5830, 14048), (7024, 11660), (8480, 9658), (8780, 9328)]