21038325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3643}}^1$

素因数の和:3674

約数の個数: 48

約数和(自身を含む): 43378176

約数和(自身を除く): 22339851

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 165, 175, 231, 275, 385, 525, 825, 1155, 1925, 3643, 5775, 10929, 18215, 25501, 40073, 54645, 76503, 91075, 120219, 127505, 200365, 273225, 280511, 382515, 601095, 637525, 841533, 1001825, 1402555, 1912575, 3005475, 4207665, 7012775, 21038325]

約数ペア:

[(1, 21038325), (3, 7012775), (5, 4207665), (7, 3005475), (11, 1912575), (15, 1402555), (21, 1001825), (25, 841533), (33, 637525), (35, 601095), (55, 382515), (75, 280511), (77, 273225), (105, 200365), (165, 127505), (175, 120219), (231, 91075), (275, 76503), (385, 54645), (525, 40073), (825, 25501), (1155, 18215), (1925, 10929), (3643, 5775)]