21529620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2441}}^1$

素因数の和:2470

約数の個数: 108

約数和(自身を含む): 75999924

約数和(自身を除く): 54470304

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2441, 2940, 4410, 4882, 7323, 8820, 9764, 12205, 14646, 17087, 21969, 24410, 29292, 34174, 36615, 43938, 48820, 51261, 68348, 73230, 85435, 87876, 102522, 109845, 119609, 146460, 153783, 170870, 205044, 219690, 239218, 256305, 307566, 341740, 358827, 439380, 478436, 512610, 598045, 615132, 717654, 768915, 1025220, 1076481, 1196090, 1435308, 1537830, 1794135, 2152962, 2392180, 3075660, 3588270, 4305924, 5382405, 7176540, 10764810, 21529620]

約数ペア:

[(1, 21529620), (2, 10764810), (3, 7176540), (4, 5382405), (5, 4305924), (6, 3588270), (7, 3075660), (9, 2392180), (10, 2152962), (12, 1794135), (14, 1537830), (15, 1435308), (18, 1196090), (20, 1076481), (21, 1025220), (28, 768915), (30, 717654), (35, 615132), (36, 598045), (42, 512610), (45, 478436), (49, 439380), (60, 358827), (63, 341740), (70, 307566), (84, 256305), (90, 239218), (98, 219690), (105, 205044), (126, 170870), (140, 153783), (147, 146460), (180, 119609), (196, 109845), (210, 102522), (245, 87876), (252, 85435), (294, 73230), (315, 68348), (420, 51261), (441, 48820), (490, 43938), (588, 36615), (630, 34174), (735, 29292), (882, 24410), (980, 21969), (1260, 17087), (1470, 14646), (1764, 12205), (2205, 9764), (2441, 8820), (2940, 7323), (4410, 4882)]