21725860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83561}}^1$

素因数の和:83583

約数の個数: 24

約数和(自身を含む): 49134456

約数和(自身を除く): 27408596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83561, 167122, 334244, 417805, 835610, 1086293, 1671220, 2172586, 4345172, 5431465, 10862930, 21725860]

約数ペア:

[(1, 21725860), (2, 10862930), (4, 5431465), (5, 4345172), (10, 2172586), (13, 1671220), (20, 1086293), (26, 835610), (52, 417805), (65, 334244), (130, 167122), (260, 83561)]