21553770

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{521}}^1$

素因数の和:735

約数の個数: 64

約数和(自身を含む): 59533056

約数和(自身を除く): 37979286

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 197, 210, 394, 521, 591, 985, 1042, 1182, 1379, 1563, 1970, 2605, 2758, 2955, 3126, 3647, 4137, 5210, 5910, 6895, 7294, 7815, 8274, 10941, 13790, 15630, 18235, 20685, 21882, 36470, 41370, 54705, 102637, 109410, 205274, 307911, 513185, 615822, 718459, 1026370, 1436918, 1539555, 2155377, 3079110, 3592295, 4310754, 7184590, 10776885, 21553770]

約数ペア:

[(1, 21553770), (2, 10776885), (3, 7184590), (5, 4310754), (6, 3592295), (7, 3079110), (10, 2155377), (14, 1539555), (15, 1436918), (21, 1026370), (30, 718459), (35, 615822), (42, 513185), (70, 307911), (105, 205274), (197, 109410), (210, 102637), (394, 54705), (521, 41370), (591, 36470), (985, 21882), (1042, 20685), (1182, 18235), (1379, 15630), (1563, 13790), (1970, 10941), (2605, 8274), (2758, 7815), (2955, 7294), (3126, 6895), (3647, 5910), (4137, 5210)]