156978171

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131143}}^1$

素因数の和:131175

約数の個数: 24

約数和(自身を含む): 272779520

約数和(自身を除く): 115801349

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 131143, 393429, 918001, 1180287, 2491717, 2754003, 7475151, 8262009, 17442019, 22425453, 52326057, 156978171]

約数ペア:

[(1, 156978171), (3, 52326057), (7, 22425453), (9, 17442019), (19, 8262009), (21, 7475151), (57, 2754003), (63, 2491717), (133, 1180287), (171, 918001), (399, 393429), (1197, 131143)]