21231315

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7489}}^1$

素因数の和:7513

約数の個数: 40

約数和(自身を含む): 43501920

約数和(自身を除く): 22270605

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7489, 22467, 37445, 52423, 67401, 112335, 157269, 202203, 262115, 337005, 471807, 606609, 786345, 1011015, 1415421, 2359035, 3033045, 4246263, 7077105, 21231315]

約数ペア:

[(1, 21231315), (3, 7077105), (5, 4246263), (7, 3033045), (9, 2359035), (15, 1415421), (21, 1011015), (27, 786345), (35, 606609), (45, 471807), (63, 337005), (81, 262115), (105, 202203), (135, 157269), (189, 112335), (315, 67401), (405, 52423), (567, 37445), (945, 22467), (2835, 7489)]