217223811

素因数分解:

$3^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{4519}}^1$

素因数の和:4648

約数の個数: 36

約数和(自身を含む): 368425200

約数和(自身を除く): 151201389

約数列:

[1, 3, 7, 9, 21, 49, 63, 109, 147, 327, 441, 763, 981, 2289, 4519, 5341, 6867, 13557, 16023, 31633, 40671, 48069, 94899, 221431, 284697, 492571, 664293, 1477713, 1992879, 3447997, 4433139, 10343991, 24135979, 31031973, 72407937, 217223811]

約数ペア:

[(1, 217223811), (3, 72407937), (7, 31031973), (9, 24135979), (21, 10343991), (49, 4433139), (63, 3447997), (109, 1992879), (147, 1477713), (327, 664293), (441, 492571), (763, 284697), (981, 221431), (2289, 94899), (4519, 48069), (5341, 40671), (6867, 31633), (13557, 16023)]