20979040

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 96

約数和(自身を含む): 53464320

約数和(自身を除く): 32485280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 67, 76, 80, 95, 103, 134, 152, 160, 190, 206, 268, 304, 335, 380, 412, 515, 536, 608, 670, 760, 824, 1030, 1072, 1273, 1340, 1520, 1648, 1957, 2060, 2144, 2546, 2680, 3040, 3296, 3914, 4120, 5092, 5360, 6365, 6901, 7828, 8240, 9785, 10184, 10720, 12730, 13802, 15656, 16480, 19570, 20368, 25460, 27604, 31312, 34505, 39140, 40736, 50920, 55208, 62624, 69010, 78280, 101840, 110416, 131119, 138020, 156560, 203680, 220832, 262238, 276040, 313120, 524476, 552080, 655595, 1048952, 1104160, 1311190, 2097904, 2622380, 4195808, 5244760, 10489520, 20979040]

約数ペア:

[(1, 20979040), (2, 10489520), (4, 5244760), (5, 4195808), (8, 2622380), (10, 2097904), (16, 1311190), (19, 1104160), (20, 1048952), (32, 655595), (38, 552080), (40, 524476), (67, 313120), (76, 276040), (80, 262238), (95, 220832), (103, 203680), (134, 156560), (152, 138020), (160, 131119), (190, 110416), (206, 101840), (268, 78280), (304, 69010), (335, 62624), (380, 55208), (412, 50920), (515, 40736), (536, 39140), (608, 34505), (670, 31312), (760, 27604), (824, 25460), (1030, 20368), (1072, 19570), (1273, 16480), (1340, 15656), (1520, 13802), (1648, 12730), (1957, 10720), (2060, 10184), (2144, 9785), (2546, 8240), (2680, 7828), (3040, 6901), (3296, 6365), (3914, 5360), (4120, 5092)]