20787936

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16657}}^1$

素因数の和:16683

約数の個数: 48

約数和(自身を含む): 58769424

約数和(自身を除く): 37981488

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16657, 33314, 49971, 66628, 99942, 133256, 199884, 216541, 266512, 399768, 433082, 533024, 649623, 799536, 866164, 1299246, 1599072, 1732328, 2598492, 3464656, 5196984, 6929312, 10393968, 20787936]

約数ペア:

[(1, 20787936), (2, 10393968), (3, 6929312), (4, 5196984), (6, 3464656), (8, 2598492), (12, 1732328), (13, 1599072), (16, 1299246), (24, 866164), (26, 799536), (32, 649623), (39, 533024), (48, 433082), (52, 399768), (78, 266512), (96, 216541), (104, 199884), (156, 133256), (208, 99942), (312, 66628), (416, 49971), (624, 33314), (1248, 16657)]