259337990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{1381}}^1$

素因数の和:1688

約数の個数: 32

約数和(自身を含む): 474634080

約数和(自身を除く): 215296090

約数列:

[1, 2, 5, 10, 89, 178, 211, 422, 445, 890, 1055, 1381, 2110, 2762, 6905, 13810, 18779, 37558, 93895, 122909, 187790, 245818, 291391, 582782, 614545, 1229090, 1456955, 2913910, 25933799, 51867598, 129668995, 259337990]

約数ペア:

[(1, 259337990), (2, 129668995), (5, 51867598), (10, 25933799), (89, 2913910), (178, 1456955), (211, 1229090), (422, 614545), (445, 582782), (890, 291391), (1055, 245818), (1381, 187790), (2110, 122909), (2762, 93895), (6905, 37558), (13810, 18779)]