21318045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{7001}}^1$

素因数の和:7045

約数の個数: 32

約数和(自身を含む): 40331520

約数和(自身を除く): 19013475

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 7001, 21003, 35005, 49007, 105015, 147021, 203029, 245035, 609087, 735105, 1015145, 1421203, 3045435, 4263609, 7106015, 21318045]

約数ペア:

[(1, 21318045), (3, 7106015), (5, 4263609), (7, 3045435), (15, 1421203), (21, 1015145), (29, 735105), (35, 609087), (87, 245035), (105, 203029), (145, 147021), (203, 105015), (435, 49007), (609, 35005), (1015, 21003), (3045, 7001)]