21352815

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4793}}^1$

素因数の和:4821

約数の個数: 40

約数和(自身を含む): 41765328

約数和(自身を除く): 20412513

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4793, 14379, 23965, 43137, 52723, 71895, 129411, 158169, 215685, 263615, 388233, 474507, 647055, 790845, 1423521, 1941165, 2372535, 4270563, 7117605, 21352815]

約数ペア:

[(1, 21352815), (3, 7117605), (5, 4270563), (9, 2372535), (11, 1941165), (15, 1423521), (27, 790845), (33, 647055), (45, 474507), (55, 388233), (81, 263615), (99, 215685), (135, 158169), (165, 129411), (297, 71895), (405, 52723), (495, 43137), (891, 23965), (1485, 14379), (4455, 4793)]