21827295

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 46416240

約数和(自身を除く): 24588945

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 441, 521, 665, 735, 855, 931, 1197, 1563, 1995, 2205, 2605, 2793, 3647, 4655, 4689, 5985, 7815, 8379, 9899, 10941, 13965, 18235, 23445, 25529, 29697, 32823, 41895, 49495, 54705, 69293, 76587, 89091, 127645, 148485, 164115, 207879, 229761, 346465, 382935, 445455, 485051, 623637, 1039395, 1148805, 1455153, 2425255, 3118185, 4365459, 7275765, 21827295]

約数ペア:

[(1, 21827295), (3, 7275765), (5, 4365459), (7, 3118185), (9, 2425255), (15, 1455153), (19, 1148805), (21, 1039395), (35, 623637), (45, 485051), (49, 445455), (57, 382935), (63, 346465), (95, 229761), (105, 207879), (133, 164115), (147, 148485), (171, 127645), (245, 89091), (285, 76587), (315, 69293), (399, 54705), (441, 49495), (521, 41895), (665, 32823), (735, 29697), (855, 25529), (931, 23445), (1197, 18235), (1563, 13965), (1995, 10941), (2205, 9899), (2605, 8379), (2793, 7815), (3647, 5985), (4655, 4689)]