18987390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1867}}^1$

素因数の和:1993

約数の個数: 48

約数和(自身を含む): 49830768

約数和(自身を除く): 30843378

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 113, 226, 339, 565, 678, 1017, 1130, 1695, 1867, 2034, 3390, 3734, 5085, 5601, 9335, 10170, 11202, 16803, 18670, 28005, 33606, 56010, 84015, 168030, 210971, 421942, 632913, 1054855, 1265826, 1898739, 2109710, 3164565, 3797478, 6329130, 9493695, 18987390]

約数ペア:

[(1, 18987390), (2, 9493695), (3, 6329130), (5, 3797478), (6, 3164565), (9, 2109710), (10, 1898739), (15, 1265826), (18, 1054855), (30, 632913), (45, 421942), (90, 210971), (113, 168030), (226, 84015), (339, 56010), (565, 33606), (678, 28005), (1017, 18670), (1130, 16803), (1695, 11202), (1867, 10170), (2034, 9335), (3390, 5601), (3734, 5085)]