21206325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1303}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 41394176

約数和(自身を除く): 20187851

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 155, 175, 217, 465, 525, 651, 775, 1085, 1303, 2325, 3255, 3909, 5425, 6515, 9121, 16275, 19545, 27363, 32575, 40393, 45605, 97725, 121179, 136815, 201965, 228025, 282751, 605895, 684075, 848253, 1009825, 1413755, 3029475, 4241265, 7068775, 21206325]

約数ペア:

[(1, 21206325), (3, 7068775), (5, 4241265), (7, 3029475), (15, 1413755), (21, 1009825), (25, 848253), (31, 684075), (35, 605895), (75, 282751), (93, 228025), (105, 201965), (155, 136815), (175, 121179), (217, 97725), (465, 45605), (525, 40393), (651, 32575), (775, 27363), (1085, 19545), (1303, 16275), (2325, 9121), (3255, 6515), (3909, 5425)]