20560815

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 39480480

約数和(自身を除く): 18919665

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 73, 99, 165, 219, 365, 495, 569, 657, 803, 1095, 1707, 2409, 2845, 3285, 4015, 5121, 6259, 7227, 8535, 12045, 18777, 25605, 31295, 36135, 41537, 56331, 93885, 124611, 207685, 281655, 373833, 456907, 623055, 1370721, 1869165, 2284535, 4112163, 6853605, 20560815]

約数ペア:

[(1, 20560815), (3, 6853605), (5, 4112163), (9, 2284535), (11, 1869165), (15, 1370721), (33, 623055), (45, 456907), (55, 373833), (73, 281655), (99, 207685), (165, 124611), (219, 93885), (365, 56331), (495, 41537), (569, 36135), (657, 31295), (803, 25605), (1095, 18777), (1707, 12045), (2409, 8535), (2845, 7227), (3285, 6259), (4015, 5121)]