21030970

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1499}}^1$

素因数の和:1590

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19145030

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1499, 2806, 2998, 7015, 7495, 14030, 14990, 34477, 68954, 91439, 172385, 182878, 344770, 457195, 914390, 2103097, 4206194, 10515485, 21030970]

約数ペア:

[(1, 21030970), (2, 10515485), (5, 4206194), (10, 2103097), (23, 914390), (46, 457195), (61, 344770), (115, 182878), (122, 172385), (230, 91439), (305, 68954), (610, 34477), (1403, 14990), (1499, 14030), (2806, 7495), (2998, 7015)]