133640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 325080

約数和(自身を除く): 191440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 257, 260, 514, 520, 1028, 1285, 2056, 2570, 3341, 5140, 6682, 10280, 13364, 16705, 26728, 33410, 66820, 133640]

約数ペア:

[(1, 133640), (2, 66820), (4, 33410), (5, 26728), (8, 16705), (10, 13364), (13, 10280), (20, 6682), (26, 5140), (40, 3341), (52, 2570), (65, 2056), (104, 1285), (130, 1028), (257, 520), (260, 514)]