216838671

素因数分解:

$3^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{7723}}^1$

素因数の和:7931

約数の個数: 24

約数和(自身を含む): 338125824

約数和(自身を除く): 121287153

約数列:

[1, 3, 7, 21, 49, 147, 191, 573, 1337, 4011, 7723, 9359, 23169, 28077, 54061, 162183, 378427, 1135281, 1475093, 4425279, 10325651, 30976953, 72279557, 216838671]

約数ペア:

[(1, 216838671), (3, 72279557), (7, 30976953), (21, 10325651), (49, 4425279), (147, 1475093), (191, 1135281), (573, 378427), (1337, 162183), (4011, 54061), (7723, 28077), (9359, 23169)]