8245640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 20306160

約数和(自身を除く): 12060520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 157, 202, 260, 314, 404, 505, 520, 628, 785, 808, 1010, 1256, 1313, 1570, 2020, 2041, 2626, 3140, 4040, 4082, 5252, 6280, 6565, 8164, 10205, 10504, 13130, 15857, 16328, 20410, 26260, 31714, 40820, 52520, 63428, 79285, 81640, 126856, 158570, 206141, 317140, 412282, 634280, 824564, 1030705, 1649128, 2061410, 4122820, 8245640]

約数ペア:

[(1, 8245640), (2, 4122820), (4, 2061410), (5, 1649128), (8, 1030705), (10, 824564), (13, 634280), (20, 412282), (26, 317140), (40, 206141), (52, 158570), (65, 126856), (101, 81640), (104, 79285), (130, 63428), (157, 52520), (202, 40820), (260, 31714), (314, 26260), (404, 20410), (505, 16328), (520, 15857), (628, 13130), (785, 10504), (808, 10205), (1010, 8164), (1256, 6565), (1313, 6280), (1570, 5252), (2020, 4082), (2041, 4040), (2626, 3140)]