201521960

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{17929}}^1$

素因数の和:18221

約数の個数: 32

約数和(自身を含む): 455063400

約数和(自身を除く): 253541440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 17929, 35858, 71716, 89645, 143432, 179290, 358580, 717160, 5038049, 10076098, 20152196, 25190245, 40304392, 50380490, 100760980, 201521960]

約数ペア:

[(1, 201521960), (2, 100760980), (4, 50380490), (5, 40304392), (8, 25190245), (10, 20152196), (20, 10076098), (40, 5038049), (281, 717160), (562, 358580), (1124, 179290), (1405, 143432), (2248, 89645), (2810, 71716), (5620, 35858), (11240, 17929)]