21008460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:391

約数の個数: 96

約数和(自身を含む): 64915200

約数和(自身を除く): 43906740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 139, 165, 220, 229, 278, 330, 417, 458, 556, 660, 687, 695, 834, 916, 1145, 1374, 1390, 1529, 1668, 2085, 2290, 2519, 2748, 2780, 3058, 3435, 4170, 4580, 4587, 5038, 6116, 6870, 7557, 7645, 8340, 9174, 10076, 12595, 13740, 15114, 15290, 18348, 22935, 25190, 30228, 30580, 31831, 37785, 45870, 50380, 63662, 75570, 91740, 95493, 127324, 151140, 159155, 190986, 318310, 350141, 381972, 477465, 636620, 700282, 954930, 1050423, 1400564, 1750705, 1909860, 2100846, 3501410, 4201692, 5252115, 7002820, 10504230, 21008460]

約数ペア:

[(1, 21008460), (2, 10504230), (3, 7002820), (4, 5252115), (5, 4201692), (6, 3501410), (10, 2100846), (11, 1909860), (12, 1750705), (15, 1400564), (20, 1050423), (22, 954930), (30, 700282), (33, 636620), (44, 477465), (55, 381972), (60, 350141), (66, 318310), (110, 190986), (132, 159155), (139, 151140), (165, 127324), (220, 95493), (229, 91740), (278, 75570), (330, 63662), (417, 50380), (458, 45870), (556, 37785), (660, 31831), (687, 30580), (695, 30228), (834, 25190), (916, 22935), (1145, 18348), (1374, 15290), (1390, 15114), (1529, 13740), (1668, 12595), (2085, 10076), (2290, 9174), (2519, 8340), (2748, 7645), (2780, 7557), (3058, 6870), (3435, 6116), (4170, 5038), (4580, 4587)]