89784520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{320659}}^1$

素因数の和:320677

約数の個数: 32

約数和(自身を含む): 230875200

約数和(自身を除く): 141090680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 320659, 641318, 1282636, 1603295, 2244613, 2565272, 3206590, 4489226, 6413180, 8978452, 11223065, 12826360, 17956904, 22446130, 44892260, 89784520]

約数ペア:

[(1, 89784520), (2, 44892260), (4, 22446130), (5, 17956904), (7, 12826360), (8, 11223065), (10, 8978452), (14, 6413180), (20, 4489226), (28, 3206590), (35, 2565272), (40, 2244613), (56, 1603295), (70, 1282636), (140, 641318), (280, 320659)]