21997352

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6823}}^1$

素因数の和:6873

約数の個数: 32

約数和(自身を含む): 45857280

約数和(自身を除く): 23859928

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6823, 13646, 27292, 54584, 88699, 177398, 211513, 354796, 423026, 709592, 846052, 1692104, 2749669, 5499338, 10998676, 21997352]

約数ペア:

[(1, 21997352), (2, 10998676), (4, 5499338), (8, 2749669), (13, 1692104), (26, 846052), (31, 709592), (52, 423026), (62, 354796), (104, 211513), (124, 177398), (248, 88699), (403, 54584), (806, 27292), (1612, 13646), (3224, 6823)]