20499075

素因数分解:

$3^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:266

約数の個数: 60

約数和(自身を含む): 38890368

約数和(自身を除く): 18391293

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 53, 75, 81, 135, 159, 191, 225, 265, 405, 477, 573, 675, 795, 955, 1325, 1431, 1719, 2025, 2385, 2865, 3975, 4293, 4775, 5157, 7155, 8595, 10123, 11925, 14325, 15471, 21465, 25785, 30369, 35775, 42975, 50615, 77355, 91107, 107325, 128925, 151845, 253075, 273321, 386775, 455535, 759225, 819963, 1366605, 2277675, 4099815, 6833025, 20499075]

約数ペア:

[(1, 20499075), (3, 6833025), (5, 4099815), (9, 2277675), (15, 1366605), (25, 819963), (27, 759225), (45, 455535), (53, 386775), (75, 273321), (81, 253075), (135, 151845), (159, 128925), (191, 107325), (225, 91107), (265, 77355), (405, 50615), (477, 42975), (573, 35775), (675, 30369), (795, 25785), (955, 21465), (1325, 15471), (1431, 14325), (1719, 11925), (2025, 10123), (2385, 8595), (2865, 7155), (3975, 5157), (4293, 4775)]