20439824

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{829}}^1$

素因数の和:927

約数の個数: 40

約数和(自身を含む): 41991360

約数和(自身を除く): 21551536

約数列:

[1, 2, 4, 8, 16, 23, 46, 67, 92, 134, 184, 268, 368, 536, 829, 1072, 1541, 1658, 3082, 3316, 6164, 6632, 12328, 13264, 19067, 24656, 38134, 55543, 76268, 111086, 152536, 222172, 305072, 444344, 888688, 1277489, 2554978, 5109956, 10219912, 20439824]

約数ペア:

[(1, 20439824), (2, 10219912), (4, 5109956), (8, 2554978), (16, 1277489), (23, 888688), (46, 444344), (67, 305072), (92, 222172), (134, 152536), (184, 111086), (268, 76268), (368, 55543), (536, 38134), (829, 24656), (1072, 19067), (1541, 13264), (1658, 12328), (3082, 6632), (3316, 6164)]