21384872

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19231}}^1$

素因数の和:19376

約数の個数: 16

約数和(自身を含む): 40387200

約数和(自身を除く): 19002328

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19231, 38462, 76924, 153848, 2673109, 5346218, 10692436, 21384872]

約数ペア:

[(1, 21384872), (2, 10692436), (4, 5346218), (8, 2673109), (139, 153848), (278, 76924), (556, 38462), (1112, 19231)]