28757015

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 41610240

約数和(自身を除く): 12853225

約数列:

[1, 5, 7, 23, 35, 115, 139, 161, 257, 695, 805, 973, 1285, 1799, 3197, 4865, 5911, 8995, 15985, 22379, 29555, 35723, 41377, 111895, 178615, 206885, 250061, 821629, 1250305, 4108145, 5751403, 28757015]

約数ペア:

[(1, 28757015), (5, 5751403), (7, 4108145), (23, 1250305), (35, 821629), (115, 250061), (139, 206885), (161, 178615), (257, 111895), (695, 41377), (805, 35723), (973, 29555), (1285, 22379), (1799, 15985), (3197, 8995), (4865, 5911)]