20017030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 20317082

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 121, 142, 233, 242, 355, 466, 605, 710, 781, 1165, 1210, 1562, 2330, 2563, 3905, 5126, 7810, 8591, 12815, 16543, 17182, 25630, 28193, 33086, 42955, 56386, 82715, 85910, 140965, 165430, 181973, 281930, 363946, 909865, 1819730, 2001703, 4003406, 10008515, 20017030]

約数ペア:

[(1, 20017030), (2, 10008515), (5, 4003406), (10, 2001703), (11, 1819730), (22, 909865), (55, 363946), (71, 281930), (110, 181973), (121, 165430), (142, 140965), (233, 85910), (242, 82715), (355, 56386), (466, 42955), (605, 33086), (710, 28193), (781, 25630), (1165, 17182), (1210, 16543), (1562, 12815), (2330, 8591), (2563, 7810), (3905, 5126)]