136720520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 315716400

約数和(自身を除く): 178995880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 137, 244, 274, 305, 409, 488, 548, 610, 685, 818, 1096, 1220, 1370, 1636, 2045, 2440, 2740, 3272, 4090, 5480, 8180, 8357, 16360, 16714, 24949, 33428, 41785, 49898, 56033, 66856, 83570, 99796, 112066, 124745, 167140, 199592, 224132, 249490, 280165, 334280, 448264, 498980, 560330, 997960, 1120660, 2241320, 3418013, 6836026, 13672052, 17090065, 27344104, 34180130, 68360260, 136720520]

約数ペア:

[(1, 136720520), (2, 68360260), (4, 34180130), (5, 27344104), (8, 17090065), (10, 13672052), (20, 6836026), (40, 3418013), (61, 2241320), (122, 1120660), (137, 997960), (244, 560330), (274, 498980), (305, 448264), (409, 334280), (488, 280165), (548, 249490), (610, 224132), (685, 199592), (818, 167140), (1096, 124745), (1220, 112066), (1370, 99796), (1636, 83570), (2045, 66856), (2440, 56033), (2740, 49898), (3272, 41785), (4090, 33428), (5480, 24949), (8180, 16714), (8357, 16360)]