870722139

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{21187}}^1$

素因数の和:21319

約数の個数: 32

約数和(自身を含む): 1410273280

約数和(自身を除く): 539551141

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 721, 1957, 2163, 5871, 13699, 21187, 41097, 63561, 148309, 402553, 444927, 1207659, 2182261, 2817871, 6546783, 8453613, 15275827, 41462959, 45827481, 124388877, 290240713, 870722139]

約数ペア:

[(1, 870722139), (3, 290240713), (7, 124388877), (19, 45827481), (21, 41462959), (57, 15275827), (103, 8453613), (133, 6546783), (309, 2817871), (399, 2182261), (721, 1207659), (1957, 444927), (2163, 402553), (5871, 148309), (13699, 63561), (21187, 41097)]