19889505

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15241}}^1$

素因数の和:15281

約数の個数: 24

約数和(自身を含む): 35666280

約数和(自身を除く): 15776775

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15241, 45723, 76205, 137169, 228615, 441989, 685845, 1325967, 2209945, 3977901, 6629835, 19889505]

約数ペア:

[(1, 19889505), (3, 6629835), (5, 3977901), (9, 2209945), (15, 1325967), (29, 685845), (45, 441989), (87, 228615), (145, 137169), (261, 76205), (435, 45723), (1305, 15241)]