20729793

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4549}}^1$

素因数の和:4597

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 12467007

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4549, 4557, 13647, 31843, 95529, 141019, 222901, 423057, 668703, 987133, 2961399, 6909931, 20729793]

約数ペア:

[(1, 20729793), (3, 6909931), (7, 2961399), (21, 987133), (31, 668703), (49, 423057), (93, 222901), (147, 141019), (217, 95529), (651, 31843), (1519, 13647), (4549, 4557)]