161310387

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1\times {\mathrm{307}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 249790464

約数和(自身を除く): 88480077

約数列:

[1, 3, 7, 21, 131, 191, 307, 393, 573, 917, 921, 1337, 2149, 2751, 4011, 6447, 25021, 40217, 58637, 75063, 120651, 175147, 175911, 281519, 410459, 525441, 844557, 1231377, 7681447, 23044341, 53770129, 161310387]

約数ペア:

[(1, 161310387), (3, 53770129), (7, 23044341), (21, 7681447), (131, 1231377), (191, 844557), (307, 525441), (393, 410459), (573, 281519), (917, 175911), (921, 175147), (1337, 120651), (2149, 75063), (2751, 58637), (4011, 40217), (6447, 25021)]