1818280

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{347}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 4134240

約数和(自身を除く): 2315960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 347, 524, 655, 694, 1048, 1310, 1388, 1735, 2620, 2776, 3470, 5240, 6940, 13880, 45457, 90914, 181828, 227285, 363656, 454570, 909140, 1818280]

約数ペア:

[(1, 1818280), (2, 909140), (4, 454570), (5, 363656), (8, 227285), (10, 181828), (20, 90914), (40, 45457), (131, 13880), (262, 6940), (347, 5240), (524, 3470), (655, 2776), (694, 2620), (1048, 1735), (1310, 1388)]