21509330

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1433}}^1$

素因数の和:1538

約数の個数: 32

約数和(自身を含む): 41299200

約数和(自身を除く): 19789870

約数列:

[1, 2, 5, 10, 19, 38, 79, 95, 158, 190, 395, 790, 1433, 1501, 2866, 3002, 7165, 7505, 14330, 15010, 27227, 54454, 113207, 136135, 226414, 272270, 566035, 1132070, 2150933, 4301866, 10754665, 21509330]

約数ペア:

[(1, 21509330), (2, 10754665), (5, 4301866), (10, 2150933), (19, 1132070), (38, 566035), (79, 272270), (95, 226414), (158, 136135), (190, 113207), (395, 54454), (790, 27227), (1433, 15010), (1501, 14330), (2866, 7505), (3002, 7165)]