21203360

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1489}}^1$

素因数の和:1593

約数の個数: 48

約数和(自身を含む): 50689800

約数和(自身を除く): 29486440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1489, 1780, 2848, 2978, 3560, 5956, 7120, 7445, 11912, 14240, 14890, 23824, 29780, 47648, 59560, 119120, 132521, 238240, 265042, 530084, 662605, 1060168, 1325210, 2120336, 2650420, 4240672, 5300840, 10601680, 21203360]

約数ペア:

[(1, 21203360), (2, 10601680), (4, 5300840), (5, 4240672), (8, 2650420), (10, 2120336), (16, 1325210), (20, 1060168), (32, 662605), (40, 530084), (80, 265042), (89, 238240), (160, 132521), (178, 119120), (356, 59560), (445, 47648), (712, 29780), (890, 23824), (1424, 14890), (1489, 14240), (1780, 11912), (2848, 7445), (2978, 7120), (3560, 5956)]