638863696

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{613}}^1\times {\mathrm{1229}}^1$

素因数の和:1903

約数の個数: 40

約数和(自身を含む): 1264238280

約数和(自身を除く): 625374584

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 613, 848, 1226, 1229, 2452, 2458, 4904, 4916, 9808, 9832, 19664, 32489, 64978, 65137, 129956, 130274, 259912, 260548, 519824, 521096, 753377, 1042192, 1506754, 3013508, 6027016, 12054032, 39928981, 79857962, 159715924, 319431848, 638863696]

約数ペア:

[(1, 638863696), (2, 319431848), (4, 159715924), (8, 79857962), (16, 39928981), (53, 12054032), (106, 6027016), (212, 3013508), (424, 1506754), (613, 1042192), (848, 753377), (1226, 521096), (1229, 519824), (2452, 260548), (2458, 259912), (4904, 130274), (4916, 129956), (9808, 65137), (9832, 64978), (19664, 32489)]