20919220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149423}}^1$

素因数の和:149439

約数の個数: 24

約数和(自身を含む): 50206464

約数和(自身を除く): 29287244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149423, 298846, 597692, 747115, 1045961, 1494230, 2091922, 2988460, 4183844, 5229805, 10459610, 20919220]

約数ペア:

[(1, 20919220), (2, 10459610), (4, 5229805), (5, 4183844), (7, 2988460), (10, 2091922), (14, 1494230), (20, 1045961), (28, 747115), (35, 597692), (70, 298846), (140, 149423)]