638943656

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{63337}}^1$

素因数の和:63453

約数の個数: 32

約数和(自身を含む): 1303496040

約数和(自身を除く): 664552384

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 194, 388, 776, 1261, 2522, 5044, 10088, 63337, 126674, 253348, 506696, 823381, 1646762, 3293524, 6143689, 6587048, 12287378, 24574756, 49149512, 79867957, 159735914, 319471828, 638943656]

約数ペア:

[(1, 638943656), (2, 319471828), (4, 159735914), (8, 79867957), (13, 49149512), (26, 24574756), (52, 12287378), (97, 6587048), (104, 6143689), (194, 3293524), (388, 1646762), (776, 823381), (1261, 506696), (2522, 253348), (5044, 126674), (10088, 63337)]