19801530

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10477}}^1$

素因数の和:10500

約数の個数: 64

約数和(自身を含む): 60353280

約数和(自身を除く): 40551750

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10477, 20954, 31431, 52385, 62862, 73339, 94293, 104770, 146678, 157155, 188586, 220017, 282879, 314310, 366695, 440034, 471465, 565758, 660051, 733390, 942930, 1100085, 1320102, 1414395, 1980153, 2200170, 2828790, 3300255, 3960306, 6600510, 9900765, 19801530]

約数ペア:

[(1, 19801530), (2, 9900765), (3, 6600510), (5, 3960306), (6, 3300255), (7, 2828790), (9, 2200170), (10, 1980153), (14, 1414395), (15, 1320102), (18, 1100085), (21, 942930), (27, 733390), (30, 660051), (35, 565758), (42, 471465), (45, 440034), (54, 366695), (63, 314310), (70, 282879), (90, 220017), (105, 188586), (126, 157155), (135, 146678), (189, 104770), (210, 94293), (270, 73339), (315, 62862), (378, 52385), (630, 31431), (945, 20954), (1890, 10477)]