20854780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54881}}^1$

素因数の和:54909

約数の個数: 24

約数和(自身を含む): 46100880

約数和(自身を除く): 25246100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54881, 109762, 219524, 274405, 548810, 1042739, 1097620, 2085478, 4170956, 5213695, 10427390, 20854780]

約数ペア:

[(1, 20854780), (2, 10427390), (4, 5213695), (5, 4170956), (10, 2085478), (19, 1097620), (20, 1042739), (38, 548810), (76, 274405), (95, 219524), (190, 109762), (380, 54881)]