21020270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{349}}^1$

素因数の和:692

約数の個数: 32

約数和(自身を含む): 40068000

約数和(自身を除く): 19047730

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 317, 349, 634, 698, 1585, 1745, 3170, 3490, 6023, 6631, 12046, 13262, 30115, 33155, 60230, 66310, 110633, 221266, 553165, 1106330, 2102027, 4204054, 10510135, 21020270]

約数ペア:

[(1, 21020270), (2, 10510135), (5, 4204054), (10, 2102027), (19, 1106330), (38, 553165), (95, 221266), (190, 110633), (317, 66310), (349, 60230), (634, 33155), (698, 30115), (1585, 13262), (1745, 12046), (3170, 6631), (3490, 6023)]