20042820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15907}}^1$

素因数の和:15929

約数の個数: 72

約数和(自身を含む): 69486144

約数和(自身を除く): 49443324

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15907, 31814, 47721, 63628, 79535, 95442, 111349, 143163, 159070, 190884, 222698, 238605, 286326, 318140, 334047, 445396, 477210, 556745, 572652, 668094, 715815, 954420, 1002141, 1113490, 1336188, 1431630, 1670235, 2004282, 2226980, 2863260, 3340470, 4008564, 5010705, 6680940, 10021410, 20042820]

約数ペア:

[(1, 20042820), (2, 10021410), (3, 6680940), (4, 5010705), (5, 4008564), (6, 3340470), (7, 2863260), (9, 2226980), (10, 2004282), (12, 1670235), (14, 1431630), (15, 1336188), (18, 1113490), (20, 1002141), (21, 954420), (28, 715815), (30, 668094), (35, 572652), (36, 556745), (42, 477210), (45, 445396), (60, 334047), (63, 318140), (70, 286326), (84, 238605), (90, 222698), (105, 190884), (126, 159070), (140, 143163), (180, 111349), (210, 95442), (252, 79535), (315, 63628), (420, 47721), (630, 31814), (1260, 15907)]