21805020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121139}}^1$

素因数の和:121154

約数の個数: 36

約数和(自身を含む): 66142440

約数和(自身を除く): 44337420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121139, 242278, 363417, 484556, 605695, 726834, 1090251, 1211390, 1453668, 1817085, 2180502, 2422780, 3634170, 4361004, 5451255, 7268340, 10902510, 21805020]

約数ペア:

[(1, 21805020), (2, 10902510), (3, 7268340), (4, 5451255), (5, 4361004), (6, 3634170), (9, 2422780), (10, 2180502), (12, 1817085), (15, 1453668), (18, 1211390), (20, 1090251), (30, 726834), (36, 605695), (45, 484556), (60, 363417), (90, 242278), (180, 121139)]