217804521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 322882560

約数和(自身を除く): 105078039

約数列:

[1, 3, 11, 33, 103, 139, 309, 417, 461, 1133, 1383, 1529, 3399, 4587, 5071, 14317, 15213, 42951, 47483, 64079, 142449, 157487, 192237, 472461, 522313, 704869, 1566939, 2114607, 6600137, 19800411, 72601507, 217804521]

約数ペア:

[(1, 217804521), (3, 72601507), (11, 19800411), (33, 6600137), (103, 2114607), (139, 1566939), (309, 704869), (417, 522313), (461, 472461), (1133, 192237), (1383, 157487), (1529, 142449), (3399, 64079), (4587, 47483), (5071, 42951), (14317, 15213)]