221387220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{28603}}^1$

素因数の和:28661

約数の個数: 72

約数和(自身を含む): 687182496

約数和(自身を除く): 465795276

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 28603, 57206, 85809, 114412, 143015, 171618, 257427, 286030, 343236, 429045, 514854, 572060, 858090, 1029708, 1229929, 1287135, 1716180, 2459858, 2574270, 3689787, 4919716, 5148540, 6149645, 7379574, 11069361, 12299290, 14759148, 18448935, 22138722, 24598580, 36897870, 44277444, 55346805, 73795740, 110693610, 221387220]

約数ペア:

[(1, 221387220), (2, 110693610), (3, 73795740), (4, 55346805), (5, 44277444), (6, 36897870), (9, 24598580), (10, 22138722), (12, 18448935), (15, 14759148), (18, 12299290), (20, 11069361), (30, 7379574), (36, 6149645), (43, 5148540), (45, 4919716), (60, 3689787), (86, 2574270), (90, 2459858), (129, 1716180), (172, 1287135), (180, 1229929), (215, 1029708), (258, 858090), (387, 572060), (430, 514854), (516, 429045), (645, 343236), (774, 286030), (860, 257427), (1290, 171618), (1548, 143015), (1935, 114412), (2580, 85809), (3870, 57206), (7740, 28603)]