87830780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{419}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 189665280

約数和(自身を除く): 101834500

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 223, 235, 419, 446, 470, 838, 892, 940, 1115, 1676, 2095, 2230, 4190, 4460, 8380, 10481, 19693, 20962, 39386, 41924, 52405, 78772, 93437, 98465, 104810, 186874, 196930, 209620, 373748, 393860, 467185, 934370, 1868740, 4391539, 8783078, 17566156, 21957695, 43915390, 87830780]

約数ペア:

[(1, 87830780), (2, 43915390), (4, 21957695), (5, 17566156), (10, 8783078), (20, 4391539), (47, 1868740), (94, 934370), (188, 467185), (223, 393860), (235, 373748), (419, 209620), (446, 196930), (470, 186874), (838, 104810), (892, 98465), (940, 93437), (1115, 78772), (1676, 52405), (2095, 41924), (2230, 39386), (4190, 20962), (4460, 19693), (8380, 10481)]