639708472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{25523}}^1$

素因数の和:25783

約数の個数: 32

約数和(自身を含む): 1297129680

約数和(自身を除く): 657421208

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 241, 482, 964, 1928, 3133, 6266, 12532, 25064, 25523, 51046, 102092, 204184, 331799, 663598, 1327196, 2654392, 6151043, 12302086, 24604172, 49208344, 79963559, 159927118, 319854236, 639708472]

約数ペア:

[(1, 639708472), (2, 319854236), (4, 159927118), (8, 79963559), (13, 49208344), (26, 24604172), (52, 12302086), (104, 6151043), (241, 2654392), (482, 1327196), (964, 663598), (1928, 331799), (3133, 204184), (6266, 102092), (12532, 51046), (25064, 25523)]