20918620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55049}}^1$

素因数の和:55077

約数の個数: 24

約数和(自身を含む): 46242000

約数和(自身を除く): 25323380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55049, 110098, 220196, 275245, 550490, 1045931, 1100980, 2091862, 4183724, 5229655, 10459310, 20918620]

約数ペア:

[(1, 20918620), (2, 10459310), (4, 5229655), (5, 4183724), (10, 2091862), (19, 1100980), (20, 1045931), (38, 550490), (76, 275245), (95, 220196), (190, 110098), (380, 55049)]