1378120

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 3136320

約数和(自身を除く): 1758200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 263, 524, 526, 655, 1048, 1052, 1310, 1315, 2104, 2620, 2630, 5240, 5260, 10520, 34453, 68906, 137812, 172265, 275624, 344530, 689060, 1378120]

約数ペア:

[(1, 1378120), (2, 689060), (4, 344530), (5, 275624), (8, 172265), (10, 137812), (20, 68906), (40, 34453), (131, 10520), (262, 5260), (263, 5240), (524, 2630), (526, 2620), (655, 2104), (1048, 1315), (1052, 1310)]