7980440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 19656000

約数和(自身を除く): 11675560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 103, 104, 130, 149, 206, 260, 298, 412, 515, 520, 596, 745, 824, 1030, 1192, 1339, 1490, 1937, 2060, 2678, 2980, 3874, 4120, 5356, 5960, 6695, 7748, 9685, 10712, 13390, 15347, 15496, 19370, 26780, 30694, 38740, 53560, 61388, 76735, 77480, 122776, 153470, 199511, 306940, 399022, 613880, 798044, 997555, 1596088, 1995110, 3990220, 7980440]

約数ペア:

[(1, 7980440), (2, 3990220), (4, 1995110), (5, 1596088), (8, 997555), (10, 798044), (13, 613880), (20, 399022), (26, 306940), (40, 199511), (52, 153470), (65, 122776), (103, 77480), (104, 76735), (130, 61388), (149, 53560), (206, 38740), (260, 30694), (298, 26780), (412, 19370), (515, 15496), (520, 15347), (596, 13390), (745, 10712), (824, 9685), (1030, 7748), (1192, 6695), (1339, 5960), (1490, 5356), (1937, 4120), (2060, 3874), (2678, 2980)]