131667280

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26981}}^1$

素因数の和:27055

約数の個数: 40

約数和(自身を含む): 311156424

約数和(自身を除く): 179489144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 26981, 53962, 107924, 134905, 215848, 269810, 431696, 539620, 1079240, 1645841, 2158480, 3291682, 6583364, 8229205, 13166728, 16458410, 26333456, 32916820, 65833640, 131667280]

約数ペア:

[(1, 131667280), (2, 65833640), (4, 32916820), (5, 26333456), (8, 16458410), (10, 13166728), (16, 8229205), (20, 6583364), (40, 3291682), (61, 2158480), (80, 1645841), (122, 1079240), (244, 539620), (305, 431696), (488, 269810), (610, 215848), (976, 134905), (1220, 107924), (2440, 53962), (4880, 26981)]