28393519

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 9622481

約数列:

[1, 7, 11, 17, 77, 109, 119, 187, 199, 763, 1199, 1309, 1393, 1853, 2189, 3383, 8393, 12971, 15323, 20383, 21691, 23681, 37213, 142681, 151837, 238601, 260491, 368747, 1670207, 2581229, 4056217, 28393519]

約数ペア:

[(1, 28393519), (7, 4056217), (11, 2581229), (17, 1670207), (77, 368747), (109, 260491), (119, 238601), (187, 151837), (199, 142681), (763, 37213), (1199, 23681), (1309, 21691), (1393, 20383), (1853, 15323), (2189, 12971), (3383, 8393)]