20114540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1231}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 25420180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1231, 1634, 2462, 3268, 4085, 4924, 6155, 8170, 12310, 16340, 23389, 24620, 46778, 52933, 93556, 105866, 116945, 211732, 233890, 264665, 467780, 529330, 1005727, 1058660, 2011454, 4022908, 5028635, 10057270, 20114540]

約数ペア:

[(1, 20114540), (2, 10057270), (4, 5028635), (5, 4022908), (10, 2011454), (19, 1058660), (20, 1005727), (38, 529330), (43, 467780), (76, 264665), (86, 233890), (95, 211732), (172, 116945), (190, 105866), (215, 93556), (380, 52933), (430, 46778), (817, 24620), (860, 23389), (1231, 16340), (1634, 12310), (2462, 8170), (3268, 6155), (4085, 4924)]