21993240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10781}}^1$

素因数の和:10812

約数の個数: 64

約数和(自身を含む): 69867360

約数和(自身を除く): 47874120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10781, 21562, 32343, 43124, 53905, 64686, 86248, 107810, 129372, 161715, 183277, 215620, 258744, 323430, 366554, 431240, 549831, 646860, 733108, 916385, 1099662, 1293720, 1466216, 1832770, 2199324, 2749155, 3665540, 4398648, 5498310, 7331080, 10996620, 21993240]

約数ペア:

[(1, 21993240), (2, 10996620), (3, 7331080), (4, 5498310), (5, 4398648), (6, 3665540), (8, 2749155), (10, 2199324), (12, 1832770), (15, 1466216), (17, 1293720), (20, 1099662), (24, 916385), (30, 733108), (34, 646860), (40, 549831), (51, 431240), (60, 366554), (68, 323430), (85, 258744), (102, 215620), (120, 183277), (136, 161715), (170, 129372), (204, 107810), (255, 86248), (340, 64686), (408, 53905), (510, 43124), (680, 32343), (1020, 21562), (2040, 10781)]