397465921

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^2$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 448234560

約数和(自身を除く): 50768639

約数列:

[1, 19, 23, 53, 131, 437, 1007, 1219, 2489, 3013, 6943, 17161, 23161, 57247, 131917, 159689, 326059, 394703, 909533, 3034091, 7499357, 17281127, 20919259, 397465921]

約数ペア:

[(1, 397465921), (19, 20919259), (23, 17281127), (53, 7499357), (131, 3034091), (437, 909533), (1007, 394703), (1219, 326059), (2489, 159689), (3013, 131917), (6943, 57247), (17161, 23161)]