20674768

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{571}}^1$

素因数の和:683

約数の個数: 40

約数和(自身を含む): 41989376

約数和(自身を除く): 21314608

約数列:

[1, 2, 4, 8, 16, 31, 62, 73, 124, 146, 248, 292, 496, 571, 584, 1142, 1168, 2263, 2284, 4526, 4568, 9052, 9136, 17701, 18104, 35402, 36208, 41683, 70804, 83366, 141608, 166732, 283216, 333464, 666928, 1292173, 2584346, 5168692, 10337384, 20674768]

約数ペア:

[(1, 20674768), (2, 10337384), (4, 5168692), (8, 2584346), (16, 1292173), (31, 666928), (62, 333464), (73, 283216), (124, 166732), (146, 141608), (248, 83366), (292, 70804), (496, 41683), (571, 36208), (584, 35402), (1142, 18104), (1168, 17701), (2263, 9136), (2284, 9052), (4526, 4568)]