21247620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:629

約数の個数: 96

約数和(自身を含む): 64810368

約数和(自身を除く): 43562748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 37, 51, 60, 68, 74, 85, 102, 111, 148, 170, 185, 204, 222, 255, 340, 370, 444, 510, 555, 563, 629, 740, 1020, 1110, 1126, 1258, 1689, 1887, 2220, 2252, 2516, 2815, 3145, 3378, 3774, 5630, 6290, 6756, 7548, 8445, 9435, 9571, 11260, 12580, 16890, 18870, 19142, 20831, 28713, 33780, 37740, 38284, 41662, 47855, 57426, 62493, 83324, 95710, 104155, 114852, 124986, 143565, 191420, 208310, 249972, 287130, 312465, 354127, 416620, 574260, 624930, 708254, 1062381, 1249860, 1416508, 1770635, 2124762, 3541270, 4249524, 5311905, 7082540, 10623810, 21247620]

約数ペア:

[(1, 21247620), (2, 10623810), (3, 7082540), (4, 5311905), (5, 4249524), (6, 3541270), (10, 2124762), (12, 1770635), (15, 1416508), (17, 1249860), (20, 1062381), (30, 708254), (34, 624930), (37, 574260), (51, 416620), (60, 354127), (68, 312465), (74, 287130), (85, 249972), (102, 208310), (111, 191420), (148, 143565), (170, 124986), (185, 114852), (204, 104155), (222, 95710), (255, 83324), (340, 62493), (370, 57426), (444, 47855), (510, 41662), (555, 38284), (563, 37740), (629, 33780), (740, 28713), (1020, 20831), (1110, 19142), (1126, 18870), (1258, 16890), (1689, 12580), (1887, 11260), (2220, 9571), (2252, 9435), (2516, 8445), (2815, 7548), (3145, 6756), (3378, 6290), (3774, 5630)]