21061558

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:364

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 16032842

約数列:

[1, 2, 7, 14, 79, 137, 139, 158, 274, 278, 553, 959, 973, 1106, 1918, 1946, 10823, 10981, 19043, 21646, 21962, 38086, 75761, 76867, 133301, 151522, 153734, 266602, 1504397, 3008794, 10530779, 21061558]

約数ペア:

[(1, 21061558), (2, 10530779), (7, 3008794), (14, 1504397), (79, 266602), (137, 153734), (139, 151522), (158, 133301), (274, 76867), (278, 75761), (553, 38086), (959, 21962), (973, 21646), (1106, 19043), (1918, 10981), (1946, 10823)]