21120056

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{29663}}^1$

素因数の和:29758

約数の個数: 16

約数和(自身を含む): 40046400

約数和(自身を除く): 18926344

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 29663, 59326, 118652, 237304, 2640007, 5280014, 10560028, 21120056]

約数ペア:

[(1, 21120056), (2, 10560028), (4, 5280014), (8, 2640007), (89, 237304), (178, 118652), (356, 59326), (712, 29663)]