21288170

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5897}}^1$

素因数の和:5942

約数の個数: 24

約数和(自身を含む): 40448484

約数和(自身を除く): 19160314

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5897, 11794, 29485, 58970, 112043, 224086, 560215, 1120430, 2128817, 4257634, 10644085, 21288170]

約数ペア:

[(1, 21288170), (2, 10644085), (5, 4257634), (10, 2128817), (19, 1120430), (38, 560215), (95, 224086), (190, 112043), (361, 58970), (722, 29485), (1805, 11794), (3610, 5897)]