19691408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2111}}^1$

素因数の和:2183

約数の個数: 40

約数和(自身を含む): 42425856

約数和(自身を除く): 22734448

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 53, 88, 106, 176, 212, 424, 583, 848, 1166, 2111, 2332, 4222, 4664, 8444, 9328, 16888, 23221, 33776, 46442, 92884, 111883, 185768, 223766, 371536, 447532, 895064, 1230713, 1790128, 2461426, 4922852, 9845704, 19691408]

約数ペア:

[(1, 19691408), (2, 9845704), (4, 4922852), (8, 2461426), (11, 1790128), (16, 1230713), (22, 895064), (44, 447532), (53, 371536), (88, 223766), (106, 185768), (176, 111883), (212, 92884), (424, 46442), (583, 33776), (848, 23221), (1166, 16888), (2111, 9328), (2332, 8444), (4222, 4664)]