20003996

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{677}}^1$

素因数の和:853

約数の個数: 24

約数和(自身を含む): 35879760

約数和(自身を除く): 15875764

約数列:

[1, 2, 4, 83, 89, 166, 178, 332, 356, 677, 1354, 2708, 7387, 14774, 29548, 56191, 60253, 112382, 120506, 224764, 241012, 5000999, 10001998, 20003996]

約数ペア:

[(1, 20003996), (2, 10001998), (4, 5000999), (83, 241012), (89, 224764), (166, 120506), (178, 112382), (332, 60253), (356, 56191), (677, 29548), (1354, 14774), (2708, 7387)]