257354355

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{2089}}^1$

素因数の和:2331

約数の個数: 32

約数和(自身を含む): 423751680

約数和(自身を除く): 166397325

約数列:

[1, 3, 5, 15, 43, 129, 191, 215, 573, 645, 955, 2089, 2865, 6267, 8213, 10445, 24639, 31335, 41065, 89827, 123195, 269481, 398999, 449135, 1196997, 1347405, 1994995, 5984985, 17156957, 51470871, 85784785, 257354355]

約数ペア:

[(1, 257354355), (3, 85784785), (5, 51470871), (15, 17156957), (43, 5984985), (129, 1994995), (191, 1347405), (215, 1196997), (573, 449135), (645, 398999), (955, 269481), (2089, 123195), (2865, 89827), (6267, 41065), (8213, 31335), (10445, 24639)]