81861728

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10357}}^1$

素因数の和:10399

約数の個数: 48

約数和(自身を含む): 182715120

約数和(自身を除く): 100853392

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 3952, 7904, 10357, 20714, 41428, 82856, 134641, 165712, 196783, 269282, 331424, 393566, 538564, 787132, 1077128, 1574264, 2154256, 2558179, 3148528, 4308512, 5116358, 6297056, 10232716, 20465432, 40930864, 81861728]

約数ペア:

[(1, 81861728), (2, 40930864), (4, 20465432), (8, 10232716), (13, 6297056), (16, 5116358), (19, 4308512), (26, 3148528), (32, 2558179), (38, 2154256), (52, 1574264), (76, 1077128), (104, 787132), (152, 538564), (208, 393566), (247, 331424), (304, 269282), (416, 196783), (494, 165712), (608, 134641), (988, 82856), (1976, 41428), (3952, 20714), (7904, 10357)]