64890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1$

素因数の和:123

約数の個数: 48

約数和(自身を含む): 194688

約数和(自身を除く): 129798

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 103, 105, 126, 206, 210, 309, 315, 515, 618, 630, 721, 927, 1030, 1442, 1545, 1854, 2163, 3090, 3605, 4326, 4635, 6489, 7210, 9270, 10815, 12978, 21630, 32445, 64890]

約数ペア:

[(1, 64890), (2, 32445), (3, 21630), (5, 12978), (6, 10815), (7, 9270), (9, 7210), (10, 6489), (14, 4635), (15, 4326), (18, 3605), (21, 3090), (30, 2163), (35, 1854), (42, 1545), (45, 1442), (63, 1030), (70, 927), (90, 721), (103, 630), (105, 618), (126, 515), (206, 315), (210, 309)]