21169380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{907}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 59492160

約数和(自身を除く): 38322780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 389, 778, 907, 1167, 1556, 1814, 1945, 2334, 2721, 3628, 3890, 4535, 4668, 5442, 5835, 7780, 9070, 10884, 11670, 13605, 18140, 23340, 27210, 54420, 352823, 705646, 1058469, 1411292, 1764115, 2116938, 3528230, 4233876, 5292345, 7056460, 10584690, 21169380]

約数ペア:

[(1, 21169380), (2, 10584690), (3, 7056460), (4, 5292345), (5, 4233876), (6, 3528230), (10, 2116938), (12, 1764115), (15, 1411292), (20, 1058469), (30, 705646), (60, 352823), (389, 54420), (778, 27210), (907, 23340), (1167, 18140), (1556, 13605), (1814, 11670), (1945, 10884), (2334, 9070), (2721, 7780), (3628, 5835), (3890, 5442), (4535, 4668)]