18829916

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4177}}^1$

素因数の和:4218

約数の個数: 36

約数和(自身を含む): 40008528

約数和(自身を除く): 21178612

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4177, 4508, 8354, 16708, 29239, 58478, 96071, 116956, 192142, 204673, 384284, 409346, 672497, 818692, 1344994, 2689988, 4707479, 9414958, 18829916]

約数ペア:

[(1, 18829916), (2, 9414958), (4, 4707479), (7, 2689988), (14, 1344994), (23, 818692), (28, 672497), (46, 409346), (49, 384284), (92, 204673), (98, 192142), (161, 116956), (196, 96071), (322, 58478), (644, 29239), (1127, 16708), (2254, 8354), (4177, 4508)]