21484640

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2857}}^1$

素因数の和:2919

約数の個数: 48

約数和(自身を含む): 51855552

約数和(自身を除く): 30370912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2857, 3760, 5714, 7520, 11428, 14285, 22856, 28570, 45712, 57140, 91424, 114280, 134279, 228560, 268558, 457120, 537116, 671395, 1074232, 1342790, 2148464, 2685580, 4296928, 5371160, 10742320, 21484640]

約数ペア:

[(1, 21484640), (2, 10742320), (4, 5371160), (5, 4296928), (8, 2685580), (10, 2148464), (16, 1342790), (20, 1074232), (32, 671395), (40, 537116), (47, 457120), (80, 268558), (94, 228560), (160, 134279), (188, 114280), (235, 91424), (376, 57140), (470, 45712), (752, 28570), (940, 22856), (1504, 14285), (1880, 11428), (2857, 7520), (3760, 5714)]