12201220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 26592048

約数和(自身を除く): 14390828

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 137, 146, 244, 274, 292, 305, 365, 548, 610, 685, 730, 1220, 1370, 1460, 2740, 4453, 8357, 8906, 10001, 16714, 17812, 20002, 22265, 33428, 40004, 41785, 44530, 50005, 83570, 89060, 100010, 167140, 200020, 610061, 1220122, 2440244, 3050305, 6100610, 12201220]

約数ペア:

[(1, 12201220), (2, 6100610), (4, 3050305), (5, 2440244), (10, 1220122), (20, 610061), (61, 200020), (73, 167140), (122, 100010), (137, 89060), (146, 83570), (244, 50005), (274, 44530), (292, 41785), (305, 40004), (365, 33428), (548, 22265), (610, 20002), (685, 17812), (730, 16714), (1220, 10001), (1370, 8906), (1460, 8357), (2740, 4453)]