258899860

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{1549}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 556995600

約数和(自身を除く): 298095740

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 137, 244, 274, 305, 548, 610, 685, 1220, 1370, 1549, 2740, 3098, 6196, 7745, 8357, 15490, 16714, 30980, 33428, 41785, 83570, 94489, 167140, 188978, 212213, 377956, 424426, 472445, 848852, 944890, 1061065, 1889780, 2122130, 4244260, 12944993, 25889986, 51779972, 64724965, 129449930, 258899860]

約数ペア:

[(1, 258899860), (2, 129449930), (4, 64724965), (5, 51779972), (10, 25889986), (20, 12944993), (61, 4244260), (122, 2122130), (137, 1889780), (244, 1061065), (274, 944890), (305, 848852), (548, 472445), (610, 424426), (685, 377956), (1220, 212213), (1370, 188978), (1549, 167140), (2740, 94489), (3098, 83570), (6196, 41785), (7745, 33428), (8357, 30980), (15490, 16714)]