12991990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1423}}^1$

素因数の和:1524

約数の個数: 32

約数和(自身を含む): 25837056

約数和(自身を除く): 12845066

約数列:

[1, 2, 5, 10, 11, 22, 55, 83, 110, 166, 415, 830, 913, 1423, 1826, 2846, 4565, 7115, 9130, 14230, 15653, 31306, 78265, 118109, 156530, 236218, 590545, 1181090, 1299199, 2598398, 6495995, 12991990]

約数ペア:

[(1, 12991990), (2, 6495995), (5, 2598398), (10, 1299199), (11, 1181090), (22, 590545), (55, 236218), (83, 156530), (110, 118109), (166, 78265), (415, 31306), (830, 15653), (913, 14230), (1423, 9130), (1826, 7115), (2846, 4565)]