20878173

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{479}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10571427

約数列:

[1, 3, 9, 29, 87, 167, 261, 479, 501, 1437, 1503, 4311, 4843, 13891, 14529, 41673, 43587, 79993, 125019, 239979, 719937, 2319797, 6959391, 20878173]

約数ペア:

[(1, 20878173), (3, 6959391), (9, 2319797), (29, 719937), (87, 239979), (167, 125019), (261, 79993), (479, 43587), (501, 41673), (1437, 14529), (1503, 13891), (4311, 4843)]