21709120

素因数分解:

$2^6\times 5^1\times {\mathrm{179}}^1\times {\mathrm{379}}^1$

素因数の和:575

約数の個数: 56

約数和(自身を含む): 52120800

約数和(自身を除く): 30411680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 179, 320, 358, 379, 716, 758, 895, 1432, 1516, 1790, 1895, 2864, 3032, 3580, 3790, 5728, 6064, 7160, 7580, 11456, 12128, 14320, 15160, 24256, 28640, 30320, 57280, 60640, 67841, 121280, 135682, 271364, 339205, 542728, 678410, 1085456, 1356820, 2170912, 2713640, 4341824, 5427280, 10854560, 21709120]

約数ペア:

[(1, 21709120), (2, 10854560), (4, 5427280), (5, 4341824), (8, 2713640), (10, 2170912), (16, 1356820), (20, 1085456), (32, 678410), (40, 542728), (64, 339205), (80, 271364), (160, 135682), (179, 121280), (320, 67841), (358, 60640), (379, 57280), (716, 30320), (758, 28640), (895, 24256), (1432, 15160), (1516, 14320), (1790, 12128), (1895, 11456), (2864, 7580), (3032, 7160), (3580, 6064), (3790, 5728)]