81215888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 177915696

約数和(自身を除く): 96699808

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 61, 74, 104, 122, 148, 173, 208, 244, 296, 346, 481, 488, 592, 692, 793, 962, 976, 1384, 1586, 1924, 2249, 2257, 2768, 3172, 3848, 4498, 4514, 6344, 6401, 7696, 8996, 9028, 10553, 12688, 12802, 17992, 18056, 21106, 25604, 29341, 35984, 36112, 42212, 51208, 58682, 83213, 84424, 102416, 117364, 137189, 166426, 168848, 234728, 274378, 332852, 390461, 469456, 548756, 665704, 780922, 1097512, 1331408, 1561844, 2195024, 3123688, 5075993, 6247376, 10151986, 20303972, 40607944, 81215888]

約数ペア:

[(1, 81215888), (2, 40607944), (4, 20303972), (8, 10151986), (13, 6247376), (16, 5075993), (26, 3123688), (37, 2195024), (52, 1561844), (61, 1331408), (74, 1097512), (104, 780922), (122, 665704), (148, 548756), (173, 469456), (208, 390461), (244, 332852), (296, 274378), (346, 234728), (481, 168848), (488, 166426), (592, 137189), (692, 117364), (793, 102416), (962, 84424), (976, 83213), (1384, 58682), (1586, 51208), (1924, 42212), (2249, 36112), (2257, 35984), (2768, 29341), (3172, 25604), (3848, 21106), (4498, 18056), (4514, 17992), (6344, 12802), (6401, 12688), (7696, 10553), (8996, 9028)]