20357584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1009}}^1$

素因数の和:1127

約数の個数: 40

約数和(自身を含む): 42957320

約数和(自身を除く): 22599736

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 97, 104, 194, 208, 388, 776, 1009, 1261, 1552, 2018, 2522, 4036, 5044, 8072, 10088, 13117, 16144, 20176, 26234, 52468, 97873, 104936, 195746, 209872, 391492, 782984, 1272349, 1565968, 2544698, 5089396, 10178792, 20357584]

約数ペア:

[(1, 20357584), (2, 10178792), (4, 5089396), (8, 2544698), (13, 1565968), (16, 1272349), (26, 782984), (52, 391492), (97, 209872), (104, 195746), (194, 104936), (208, 97873), (388, 52468), (776, 26234), (1009, 20176), (1261, 16144), (1552, 13117), (2018, 10088), (2522, 8072), (4036, 5044)]