640951714

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1\times {\mathrm{433}}^1$

素因数の和:679

約数の個数: 48

約数和(自身を含む): 1108007208

約数和(自身を除く): 467055494

約数列:

[1, 2, 13, 17, 26, 34, 197, 221, 289, 394, 433, 442, 578, 866, 2561, 3349, 3757, 5122, 5629, 6698, 7361, 7514, 11258, 14722, 43537, 56933, 85301, 87074, 95693, 113866, 125137, 170602, 191386, 250274, 740129, 1108913, 1450117, 1480258, 1626781, 2217826, 2900234, 3253562, 18851521, 24651989, 37703042, 49303978, 320475857, 640951714]

約数ペア:

[(1, 640951714), (2, 320475857), (13, 49303978), (17, 37703042), (26, 24651989), (34, 18851521), (197, 3253562), (221, 2900234), (289, 2217826), (394, 1626781), (433, 1480258), (442, 1450117), (578, 1108913), (866, 740129), (2561, 250274), (3349, 191386), (3757, 170602), (5122, 125137), (5629, 113866), (6698, 95693), (7361, 87074), (7514, 85301), (11258, 56933), (14722, 43537)]