21000969605

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2371651}}^1$

素因数の和:2371697

約数の個数: 32

約数和(自身を含む): 32785717248

約数和(自身を除く): 11784747643

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 8855, 2371651, 11858255, 16601557, 26088161, 54547973, 83007785, 130440805, 182617127, 272739865, 381835811, 600027703, 913085635, 1909179055, 3000138515, 4200193921, 21000969605]

約数ペア:

[(1, 21000969605), (5, 4200193921), (7, 3000138515), (11, 1909179055), (23, 913085635), (35, 600027703), (55, 381835811), (77, 272739865), (115, 182617127), (161, 130440805), (253, 83007785), (385, 54547973), (805, 26088161), (1265, 16601557), (1771, 11858255), (8855, 2371651)]