21374620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56249}}^1$

素因数の和:56277

約数の個数: 24

約数和(自身を含む): 47250000

約数和(自身を除く): 25875380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56249, 112498, 224996, 281245, 562490, 1068731, 1124980, 2137462, 4274924, 5343655, 10687310, 21374620]

約数ペア:

[(1, 21374620), (2, 10687310), (4, 5343655), (5, 4274924), (10, 2137462), (19, 1124980), (20, 1068731), (38, 562490), (76, 281245), (95, 224996), (190, 112498), (380, 56249)]