249399930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{639487}}^1$

素因数の和:639510

約数の個数: 32

約数和(自身を含む): 644603904

約数和(自身を除く): 395203974

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 639487, 1278974, 1918461, 3197435, 3836922, 6394870, 8313331, 9592305, 16626662, 19184610, 24939993, 41566655, 49879986, 83133310, 124699965, 249399930]

約数ペア:

[(1, 249399930), (2, 124699965), (3, 83133310), (5, 49879986), (6, 41566655), (10, 24939993), (13, 19184610), (15, 16626662), (26, 9592305), (30, 8313331), (39, 6394870), (65, 3836922), (78, 3197435), (130, 1918461), (195, 1278974), (390, 639487)]