20413745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 27993600

約数和(自身を除く): 7579855

約数列:

[1, 5, 11, 47, 53, 55, 149, 235, 265, 517, 583, 745, 1639, 2491, 2585, 2915, 7003, 7897, 8195, 12455, 27401, 35015, 39485, 77033, 86867, 137005, 371159, 385165, 434335, 1855795, 4082749, 20413745]

約数ペア:

[(1, 20413745), (5, 4082749), (11, 1855795), (47, 434335), (53, 385165), (55, 371159), (149, 137005), (235, 86867), (265, 77033), (517, 39485), (583, 35015), (745, 27401), (1639, 12455), (2491, 8195), (2585, 7897), (2915, 7003)]