218682723

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{3943}}^1$

素因数の和:4111

約数の個数: 32

約数和(自身を含む): 353382400

約数和(自身を除く): 134699677

約数列:

[1, 3, 7, 19, 21, 57, 133, 139, 399, 417, 973, 2641, 2919, 3943, 7923, 11829, 18487, 27601, 55461, 74917, 82803, 224751, 524419, 548077, 1573257, 1644231, 3836539, 10413463, 11509617, 31240389, 72894241, 218682723]

約数ペア:

[(1, 218682723), (3, 72894241), (7, 31240389), (19, 11509617), (21, 10413463), (57, 3836539), (133, 1644231), (139, 1573257), (399, 548077), (417, 524419), (973, 224751), (2641, 82803), (2919, 74917), (3943, 55461), (7923, 27601), (11829, 18487)]