21921789

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{5441}}^1$

素因数の和:5540

約数の個数: 16

約数和(自身を含む): 31345920

約数和(自身を除く): 9424131

約数列:

[1, 3, 17, 51, 79, 237, 1343, 4029, 5441, 16323, 92497, 277491, 429839, 1289517, 7307263, 21921789]

約数ペア:

[(1, 21921789), (3, 7307263), (17, 1289517), (51, 429839), (79, 277491), (237, 92497), (1343, 16323), (4029, 5441)]