21391796

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{1627}}^1$

素因数の和:1823

約数の個数: 24

約数和(自身を含む): 39658080

約数和(自身を除く): 18266284

約数列:

[1, 2, 4, 19, 38, 76, 173, 346, 692, 1627, 3254, 3287, 6508, 6574, 13148, 30913, 61826, 123652, 281471, 562942, 1125884, 5347949, 10695898, 21391796]

約数ペア:

[(1, 21391796), (2, 10695898), (4, 5347949), (19, 1125884), (38, 562942), (76, 281471), (173, 123652), (346, 61826), (692, 30913), (1627, 13148), (3254, 6574), (3287, 6508)]