21129675

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 40330752

約数和(自身を除く): 19201077

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 167, 175, 241, 501, 525, 723, 835, 1169, 1205, 1687, 2505, 3507, 3615, 4175, 5061, 5845, 6025, 8435, 12525, 17535, 18075, 25305, 29225, 40247, 42175, 87675, 120741, 126525, 201235, 281729, 603705, 845187, 1006175, 1408645, 3018525, 4225935, 7043225, 21129675]

約数ペア:

[(1, 21129675), (3, 7043225), (5, 4225935), (7, 3018525), (15, 1408645), (21, 1006175), (25, 845187), (35, 603705), (75, 281729), (105, 201235), (167, 126525), (175, 120741), (241, 87675), (501, 42175), (525, 40247), (723, 29225), (835, 25305), (1169, 18075), (1205, 17535), (1687, 12525), (2505, 8435), (3507, 6025), (3615, 5845), (4175, 5061)]