21785235

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 36694080

約数和(自身を除く): 14908845

約数列:

[1, 3, 5, 15, 29, 61, 87, 145, 183, 305, 435, 821, 915, 1769, 2463, 4105, 5307, 8845, 12315, 23809, 26535, 50081, 71427, 119045, 150243, 250405, 357135, 751215, 1452349, 4357047, 7261745, 21785235]

約数ペア:

[(1, 21785235), (3, 7261745), (5, 4357047), (15, 1452349), (29, 751215), (61, 357135), (87, 250405), (145, 150243), (183, 119045), (305, 71427), (435, 50081), (821, 26535), (915, 23809), (1769, 12315), (2463, 8845), (4105, 5307)]