20181780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{112121}}^1$

素因数の和:112136

約数の個数: 36

約数和(自身を含む): 61218612

約数和(自身を除く): 41036832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 112121, 224242, 336363, 448484, 560605, 672726, 1009089, 1121210, 1345452, 1681815, 2018178, 2242420, 3363630, 4036356, 5045445, 6727260, 10090890, 20181780]

約数ペア:

[(1, 20181780), (2, 10090890), (3, 6727260), (4, 5045445), (5, 4036356), (6, 3363630), (9, 2242420), (10, 2018178), (12, 1681815), (15, 1345452), (18, 1121210), (20, 1009089), (30, 672726), (36, 560605), (45, 448484), (60, 336363), (90, 224242), (180, 112121)]