81951538

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 131668992

約数和(自身を除く): 49717454

約数列:

[1, 2, 31, 41, 62, 82, 103, 206, 313, 626, 1271, 2542, 3193, 4223, 6386, 8446, 9703, 12833, 19406, 25666, 32239, 64478, 130913, 261826, 397823, 795646, 999409, 1321799, 1998818, 2643598, 40975769, 81951538]

約数ペア:

[(1, 81951538), (2, 40975769), (31, 2643598), (41, 1998818), (62, 1321799), (82, 999409), (103, 795646), (206, 397823), (313, 261826), (626, 130913), (1271, 64478), (2542, 32239), (3193, 25666), (4223, 19406), (6386, 12833), (8446, 9703)]