30891777

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{557}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 49996800

約数和(自身を除く): 19105023

約数列:

[1, 3, 7, 19, 21, 57, 133, 139, 399, 417, 557, 973, 1671, 2641, 2919, 3899, 7923, 10583, 11697, 18487, 31749, 55461, 74081, 77423, 222243, 232269, 541961, 1471037, 1625883, 4413111, 10297259, 30891777]

約数ペア:

[(1, 30891777), (3, 10297259), (7, 4413111), (19, 1625883), (21, 1471037), (57, 541961), (133, 232269), (139, 222243), (399, 77423), (417, 74081), (557, 55461), (973, 31749), (1671, 18487), (2641, 11697), (2919, 10583), (3899, 7923)]