77772560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15937}}^1$

素因数の和:16011

約数の個数: 40

約数和(自身を含む): 183797016

約数和(自身を除く): 106024456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 15937, 31874, 63748, 79685, 127496, 159370, 254992, 318740, 637480, 972157, 1274960, 1944314, 3888628, 4860785, 7777256, 9721570, 15554512, 19443140, 38886280, 77772560]

約数ペア:

[(1, 77772560), (2, 38886280), (4, 19443140), (5, 15554512), (8, 9721570), (10, 7777256), (16, 4860785), (20, 3888628), (40, 1944314), (61, 1274960), (80, 972157), (122, 637480), (244, 318740), (305, 254992), (488, 159370), (610, 127496), (976, 79685), (1220, 63748), (2440, 31874), (4880, 15937)]