66705860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{256561}}^1$

素因数の和:256583

約数の個数: 24

約数和(自身を含む): 150858456

約数和(自身を除く): 84152596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 256561, 513122, 1026244, 1282805, 2565610, 3335293, 5131220, 6670586, 13341172, 16676465, 33352930, 66705860]

約数ペア:

[(1, 66705860), (2, 33352930), (4, 16676465), (5, 13341172), (10, 6670586), (13, 5131220), (20, 3335293), (26, 2565610), (52, 1282805), (65, 1026244), (130, 513122), (260, 256561)]