21872835

素因数分解:

$3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1019}}^1$

素因数の和:1089

約数の個数: 40

約数和(自身を含む): 39988080

約数和(自身を除く): 18115245

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 265, 405, 477, 795, 1019, 1431, 2385, 3057, 4293, 5095, 7155, 9171, 15285, 21465, 27513, 45855, 54007, 82539, 137565, 162021, 270035, 412695, 486063, 810105, 1458189, 2430315, 4374567, 7290945, 21872835]

約数ペア:

[(1, 21872835), (3, 7290945), (5, 4374567), (9, 2430315), (15, 1458189), (27, 810105), (45, 486063), (53, 412695), (81, 270035), (135, 162021), (159, 137565), (265, 82539), (405, 54007), (477, 45855), (795, 27513), (1019, 21465), (1431, 15285), (2385, 9171), (3057, 7155), (4293, 5095)]