18790460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72271}}^1$

素因数の和:72293

約数の個数: 24

約数和(自身を含む): 42495936

約数和(自身を除く): 23705476

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72271, 144542, 289084, 361355, 722710, 939523, 1445420, 1879046, 3758092, 4697615, 9395230, 18790460]

約数ペア:

[(1, 18790460), (2, 9395230), (4, 4697615), (5, 3758092), (10, 1879046), (13, 1445420), (20, 939523), (26, 722710), (52, 361355), (65, 289084), (130, 144542), (260, 72271)]