203428197

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{157}}^2$

素因数の和:458

約数の個数: 36

約数和(自身を含む): 340550496

約数和(自身を除く): 137122299

約数列:

[1, 3, 7, 9, 21, 63, 131, 157, 393, 471, 917, 1099, 1179, 1413, 2751, 3297, 8253, 9891, 20567, 24649, 61701, 73947, 143969, 172543, 185103, 221841, 431907, 517629, 1295721, 1552887, 3229019, 9687057, 22603133, 29061171, 67809399, 203428197]

約数ペア:

[(1, 203428197), (3, 67809399), (7, 29061171), (9, 22603133), (21, 9687057), (63, 3229019), (131, 1552887), (157, 1295721), (393, 517629), (471, 431907), (917, 221841), (1099, 185103), (1179, 172543), (1413, 143969), (2751, 73947), (3297, 61701), (8253, 24649), (9891, 20567)]