21541125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 17995515

約数列:

[1, 3, 5, 15, 17, 25, 31, 51, 75, 85, 93, 109, 125, 155, 255, 327, 375, 425, 465, 527, 545, 775, 1275, 1581, 1635, 1853, 2125, 2325, 2635, 2725, 3379, 3875, 5559, 6375, 7905, 8175, 9265, 10137, 11625, 13175, 13625, 16895, 27795, 39525, 40875, 46325, 50685, 57443, 65875, 84475, 138975, 172329, 197625, 231625, 253425, 287215, 422375, 694875, 861645, 1267125, 1436075, 4308225, 7180375, 21541125]

約数ペア:

[(1, 21541125), (3, 7180375), (5, 4308225), (15, 1436075), (17, 1267125), (25, 861645), (31, 694875), (51, 422375), (75, 287215), (85, 253425), (93, 231625), (109, 197625), (125, 172329), (155, 138975), (255, 84475), (327, 65875), (375, 57443), (425, 50685), (465, 46325), (527, 40875), (545, 39525), (775, 27795), (1275, 16895), (1581, 13625), (1635, 13175), (1853, 11625), (2125, 10137), (2325, 9265), (2635, 8175), (2725, 7905), (3379, 6375), (3875, 5559)]