21454797

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 15061683

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 103, 109, 147, 273, 309, 327, 637, 721, 763, 1339, 1417, 1911, 2163, 2289, 4017, 4251, 5047, 5341, 9373, 9919, 11227, 15141, 16023, 28119, 29757, 33681, 65611, 69433, 78589, 145951, 196833, 208299, 235767, 437853, 550123, 1021657, 1650369, 3064971, 7151599, 21454797]

約数ペア:

[(1, 21454797), (3, 7151599), (7, 3064971), (13, 1650369), (21, 1021657), (39, 550123), (49, 437853), (91, 235767), (103, 208299), (109, 196833), (147, 145951), (273, 78589), (309, 69433), (327, 65611), (637, 33681), (721, 29757), (763, 28119), (1339, 16023), (1417, 15141), (1911, 11227), (2163, 9919), (2289, 9373), (4017, 5341), (4251, 5047)]