639968498

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1\times {\mathrm{499}}^1$

素因数の和:1082

約数の個数: 32

約数和(自身を含む): 1047816000

約数和(自身を除く): 407847502

約数列:

[1, 2, 13, 26, 107, 214, 461, 499, 922, 998, 1391, 2782, 5993, 6487, 11986, 12974, 49327, 53393, 98654, 106786, 230039, 460078, 641251, 694109, 1282502, 1388218, 2990507, 5981014, 24614173, 49228346, 319984249, 639968498]

約数ペア:

[(1, 639968498), (2, 319984249), (13, 49228346), (26, 24614173), (107, 5981014), (214, 2990507), (461, 1388218), (499, 1282502), (922, 694109), (998, 641251), (1391, 460078), (2782, 230039), (5993, 106786), (6487, 98654), (11986, 53393), (12974, 49327)]