20417516

素因数分解:

$2^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1427}}^1$

素因数の和:1518

約数の個数: 36

約数和(自身を含む): 42163128

約数和(自身を除く): 21745612

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 292, 511, 1022, 1427, 2044, 2854, 3577, 5708, 7154, 9989, 14308, 19978, 39956, 69923, 104171, 139846, 208342, 279692, 416684, 729197, 1458394, 2916788, 5104379, 10208758, 20417516]

約数ペア:

[(1, 20417516), (2, 10208758), (4, 5104379), (7, 2916788), (14, 1458394), (28, 729197), (49, 416684), (73, 279692), (98, 208342), (146, 139846), (196, 104171), (292, 69923), (511, 39956), (1022, 19978), (1427, 14308), (2044, 9989), (2854, 7154), (3577, 5708)]