19995872

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{677}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 43055712

約数和(自身を除く): 23059840

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 208, 284, 416, 568, 677, 923, 1136, 1354, 1846, 2272, 2708, 3692, 5416, 7384, 8801, 10832, 14768, 17602, 21664, 29536, 35204, 48067, 70408, 96134, 140816, 192268, 281632, 384536, 624871, 769072, 1249742, 1538144, 2499484, 4998968, 9997936, 19995872]

約数ペア:

[(1, 19995872), (2, 9997936), (4, 4998968), (8, 2499484), (13, 1538144), (16, 1249742), (26, 769072), (32, 624871), (52, 384536), (71, 281632), (104, 192268), (142, 140816), (208, 96134), (284, 70408), (416, 48067), (568, 35204), (677, 29536), (923, 21664), (1136, 17602), (1354, 14768), (1846, 10832), (2272, 8801), (2708, 7384), (3692, 5416)]