81889780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83561}}^1$

素因数の和:83584

約数の個数: 36

約数和(自身を含む): 200047428

約数和(自身を除く): 118157648

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 83561, 167122, 334244, 417805, 584927, 835610, 1169854, 1671220, 2339708, 2924635, 4094489, 5849270, 8188978, 11698540, 16377956, 20472445, 40944890, 81889780]

約数ペア:

[(1, 81889780), (2, 40944890), (4, 20472445), (5, 16377956), (7, 11698540), (10, 8188978), (14, 5849270), (20, 4094489), (28, 2924635), (35, 2339708), (49, 1671220), (70, 1169854), (98, 835610), (140, 584927), (196, 417805), (245, 334244), (490, 167122), (980, 83561)]