7981197

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 13009920

約数和(自身を除く): 5028723

約数列:

[1, 3, 7, 19, 21, 57, 83, 133, 241, 249, 399, 581, 723, 1577, 1687, 1743, 4579, 4731, 5061, 11039, 13737, 20003, 32053, 33117, 60009, 96159, 140021, 380057, 420063, 1140171, 2660399, 7981197]

約数ペア:

[(1, 7981197), (3, 2660399), (7, 1140171), (19, 420063), (21, 380057), (57, 140021), (83, 96159), (133, 60009), (241, 33117), (249, 32053), (399, 20003), (581, 13737), (723, 11039), (1577, 5061), (1687, 4731), (1743, 4579)]