398698222

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 653510592

約数和(自身を除く): 254812370

約数列:

[1, 2, 13, 26, 137, 173, 274, 346, 647, 1294, 1781, 2249, 3562, 4498, 8411, 16822, 23701, 47402, 88639, 111931, 177278, 223862, 308113, 616226, 1152307, 1455103, 2304614, 2910206, 15334547, 30669094, 199349111, 398698222]

約数ペア:

[(1, 398698222), (2, 199349111), (13, 30669094), (26, 15334547), (137, 2910206), (173, 2304614), (274, 1455103), (346, 1152307), (647, 616226), (1294, 308113), (1781, 223862), (2249, 177278), (3562, 111931), (4498, 88639), (8411, 47402), (16822, 23701)]