21451725

素因数分解:

$3^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{1423}}^1$

素因数の和:1506

約数の個数: 36

約数和(自身を含む): 39023296

約数和(自身を除く): 17571571

約数列:

[1, 3, 5, 9, 15, 25, 45, 67, 75, 201, 225, 335, 603, 1005, 1423, 1675, 3015, 4269, 5025, 7115, 12807, 15075, 21345, 35575, 64035, 95341, 106725, 286023, 320175, 476705, 858069, 1430115, 2383525, 4290345, 7150575, 21451725]

約数ペア:

[(1, 21451725), (3, 7150575), (5, 4290345), (9, 2383525), (15, 1430115), (25, 858069), (45, 476705), (67, 320175), (75, 286023), (201, 106725), (225, 95341), (335, 64035), (603, 35575), (1005, 21345), (1423, 15075), (1675, 12807), (3015, 7115), (4269, 5025)]