21538678

素因数分解:

$2^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{6899}}^1$

素因数の和:7131

約数の個数: 16

約数和(自身を含む): 37094400

約数和(自身を除く): 15555722

約数列:

[1, 2, 7, 14, 223, 446, 1561, 3122, 6899, 13798, 48293, 96586, 1538477, 3076954, 10769339, 21538678]

約数ペア:

[(1, 21538678), (2, 10769339), (7, 3076954), (14, 1538477), (223, 96586), (446, 48293), (1561, 13798), (3122, 6899)]