19867815

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{787}}^1$

素因数の和:829

約数の個数: 64

約数和(自身を含む): 40849920

約数和(自身を除く): 20982105

約数列:

[1, 3, 5, 9, 11, 15, 17, 27, 33, 45, 51, 55, 85, 99, 135, 153, 165, 187, 255, 297, 459, 495, 561, 765, 787, 935, 1485, 1683, 2295, 2361, 2805, 3935, 5049, 7083, 8415, 8657, 11805, 13379, 21249, 25245, 25971, 35415, 40137, 43285, 66895, 77913, 106245, 120411, 129855, 147169, 200685, 233739, 361233, 389565, 441507, 602055, 735845, 1168695, 1324521, 1806165, 2207535, 3973563, 6622605, 19867815]

約数ペア:

[(1, 19867815), (3, 6622605), (5, 3973563), (9, 2207535), (11, 1806165), (15, 1324521), (17, 1168695), (27, 735845), (33, 602055), (45, 441507), (51, 389565), (55, 361233), (85, 233739), (99, 200685), (135, 147169), (153, 129855), (165, 120411), (187, 106245), (255, 77913), (297, 66895), (459, 43285), (495, 40137), (561, 35415), (765, 25971), (787, 25245), (935, 21249), (1485, 13379), (1683, 11805), (2295, 8657), (2361, 8415), (2805, 7083), (3935, 5049)]