640003648

素因数分解:

$2^6\times {\mathrm{79}}^1\times {\mathrm{126583}}^1$

素因数の和:126674

約数の個数: 28

約数和(自身を含む): 1286093440

約数和(自身を除く): 646089792

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 158, 316, 632, 1264, 2528, 5056, 126583, 253166, 506332, 1012664, 2025328, 4050656, 8101312, 10000057, 20000114, 40000228, 80000456, 160000912, 320001824, 640003648]

約数ペア:

[(1, 640003648), (2, 320001824), (4, 160000912), (8, 80000456), (16, 40000228), (32, 20000114), (64, 10000057), (79, 8101312), (158, 4050656), (316, 2025328), (632, 1012664), (1264, 506332), (2528, 253166), (5056, 126583)]