19796580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1009}}^1$

素因数の和:1133

約数の個数: 72

約数和(自身を含む): 60660600

約数和(自身を除く): 40864020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1009, 1090, 1308, 1635, 1962, 2018, 2180, 3027, 3270, 3924, 4036, 4905, 5045, 6054, 6540, 9081, 9810, 10090, 12108, 15135, 18162, 19620, 20180, 30270, 36324, 45405, 60540, 90810, 109981, 181620, 219962, 329943, 439924, 549905, 659886, 989829, 1099810, 1319772, 1649715, 1979658, 2199620, 3299430, 3959316, 4949145, 6598860, 9898290, 19796580]

約数ペア:

[(1, 19796580), (2, 9898290), (3, 6598860), (4, 4949145), (5, 3959316), (6, 3299430), (9, 2199620), (10, 1979658), (12, 1649715), (15, 1319772), (18, 1099810), (20, 989829), (30, 659886), (36, 549905), (45, 439924), (60, 329943), (90, 219962), (109, 181620), (180, 109981), (218, 90810), (327, 60540), (436, 45405), (545, 36324), (654, 30270), (981, 20180), (1009, 19620), (1090, 18162), (1308, 15135), (1635, 12108), (1962, 10090), (2018, 9810), (2180, 9081), (3027, 6540), (3270, 6054), (3924, 5045), (4036, 4905)]