21268060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{349}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 49039200

約数和(自身を除く): 27771140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 277, 349, 554, 698, 1108, 1385, 1396, 1745, 2770, 3047, 3490, 3839, 5540, 6094, 6980, 7678, 12188, 15235, 15356, 19195, 30470, 38390, 60940, 76780, 96673, 193346, 386692, 483365, 966730, 1063403, 1933460, 2126806, 4253612, 5317015, 10634030, 21268060]

約数ペア:

[(1, 21268060), (2, 10634030), (4, 5317015), (5, 4253612), (10, 2126806), (11, 1933460), (20, 1063403), (22, 966730), (44, 483365), (55, 386692), (110, 193346), (220, 96673), (277, 76780), (349, 60940), (554, 38390), (698, 30470), (1108, 19195), (1385, 15356), (1396, 15235), (1745, 12188), (2770, 7678), (3047, 6980), (3490, 6094), (3839, 5540)]