18981004

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{11113}}^1$

素因数の和:11185

約数の個数: 24

約数和(自身を含む): 38587808

約数和(自身を除く): 19606804

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 11113, 22226, 44452, 77791, 155582, 311164, 677893, 1355786, 2711572, 4745251, 9490502, 18981004]

約数ペア:

[(1, 18981004), (2, 9490502), (4, 4745251), (7, 2711572), (14, 1355786), (28, 677893), (61, 311164), (122, 155582), (244, 77791), (427, 44452), (854, 22226), (1708, 11113)]