21646380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51539}}^1$

素因数の和:51558

約数の個数: 48

約数和(自身を含む): 69269760

約数和(自身を除く): 47623380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51539, 103078, 154617, 206156, 257695, 309234, 360773, 515390, 618468, 721546, 773085, 1030780, 1082319, 1443092, 1546170, 1803865, 2164638, 3092340, 3607730, 4329276, 5411595, 7215460, 10823190, 21646380]

約数ペア:

[(1, 21646380), (2, 10823190), (3, 7215460), (4, 5411595), (5, 4329276), (6, 3607730), (7, 3092340), (10, 2164638), (12, 1803865), (14, 1546170), (15, 1443092), (20, 1082319), (21, 1030780), (28, 773085), (30, 721546), (35, 618468), (42, 515390), (60, 360773), (70, 309234), (84, 257695), (105, 206156), (140, 154617), (210, 103078), (420, 51539)]