21639786

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{515233}}^1$

素因数の和:515245

約数の個数: 16

約数和(自身を含む): 49462464

約数和(自身を除く): 27822678

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 515233, 1030466, 1545699, 3091398, 3606631, 7213262, 10819893, 21639786]

約数ペア:

[(1, 21639786), (2, 10819893), (3, 7213262), (6, 3606631), (7, 3091398), (14, 1545699), (21, 1030466), (42, 515233)]