66671800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{25643}}^1$

素因数の和:25672

約数の個数: 48

約数和(自身を含む): 166942440

約数和(自身を除く): 100270640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 25643, 51286, 102572, 128215, 205144, 256430, 333359, 512860, 641075, 666718, 1025720, 1282150, 1333436, 1666795, 2564300, 2666872, 3333590, 5128600, 6667180, 8333975, 13334360, 16667950, 33335900, 66671800]

約数ペア:

[(1, 66671800), (2, 33335900), (4, 16667950), (5, 13334360), (8, 8333975), (10, 6667180), (13, 5128600), (20, 3333590), (25, 2666872), (26, 2564300), (40, 1666795), (50, 1333436), (52, 1282150), (65, 1025720), (100, 666718), (104, 641075), (130, 512860), (200, 333359), (260, 256430), (325, 205144), (520, 128215), (650, 102572), (1300, 51286), (2600, 25643)]