20455695

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{479}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 18332145

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 73, 117, 195, 219, 365, 479, 585, 657, 949, 1095, 1437, 2395, 2847, 3285, 4311, 4745, 6227, 7185, 8541, 14235, 18681, 21555, 31135, 34967, 42705, 56043, 93405, 104901, 174835, 280215, 314703, 454571, 524505, 1363713, 1573515, 2272855, 4091139, 6818565, 20455695]

約数ペア:

[(1, 20455695), (3, 6818565), (5, 4091139), (9, 2272855), (13, 1573515), (15, 1363713), (39, 524505), (45, 454571), (65, 314703), (73, 280215), (117, 174835), (195, 104901), (219, 93405), (365, 56043), (479, 42705), (585, 34967), (657, 31135), (949, 21555), (1095, 18681), (1437, 14235), (2395, 8541), (2847, 7185), (3285, 6227), (4311, 4745)]