21091330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8539}}^1$

素因数の和:8578

約数の個数: 32

約数和(自身を含む): 43041600

約数和(自身を除く): 21950270

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8539, 17078, 42695, 85390, 111007, 162241, 222014, 324482, 555035, 811205, 1110070, 1622410, 2109133, 4218266, 10545665, 21091330]

約数ペア:

[(1, 21091330), (2, 10545665), (5, 4218266), (10, 2109133), (13, 1622410), (19, 1110070), (26, 811205), (38, 555035), (65, 324482), (95, 222014), (130, 162241), (190, 111007), (247, 85390), (494, 42695), (1235, 17078), (2470, 8539)]