21040965

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4723}}^1$

素因数の和:4751

約数の個数: 40

約数和(自身を含む): 41155488

約数和(自身を除く): 20114523

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4723, 14169, 23615, 42507, 51953, 70845, 127521, 155859, 212535, 259765, 382563, 467577, 637605, 779295, 1402731, 1912815, 2337885, 4208193, 7013655, 21040965]

約数ペア:

[(1, 21040965), (3, 7013655), (5, 4208193), (9, 2337885), (11, 1912815), (15, 1402731), (27, 779295), (33, 637605), (45, 467577), (55, 382563), (81, 259765), (99, 212535), (135, 155859), (165, 127521), (297, 70845), (405, 51953), (495, 42507), (891, 23615), (1485, 14169), (4455, 4723)]