21360075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1523}}^1$

素因数の和:1564

約数の個数: 48

約数和(自身を含む): 40818816

約数和(自身を除く): 19458741

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1523, 2805, 4569, 4675, 7615, 14025, 16753, 22845, 25891, 38075, 50259, 77673, 83765, 114225, 129455, 251295, 284801, 388365, 418825, 647275, 854403, 1256475, 1424005, 1941825, 4272015, 7120025, 21360075]

約数ペア:

[(1, 21360075), (3, 7120025), (5, 4272015), (11, 1941825), (15, 1424005), (17, 1256475), (25, 854403), (33, 647275), (51, 418825), (55, 388365), (75, 284801), (85, 251295), (165, 129455), (187, 114225), (255, 83765), (275, 77673), (425, 50259), (561, 38075), (825, 25891), (935, 22845), (1275, 16753), (1523, 14025), (2805, 7615), (4569, 4675)]