20905087408

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{701}}^1\times {\mathrm{109639}}^1$

素因数の和:110365

約数の個数: 40

約数和(自身を含む): 42947742240

約数和(自身を除く): 22042654832

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 701, 1402, 2804, 5608, 11216, 11917, 23834, 47668, 95336, 109639, 190672, 219278, 438556, 877112, 1754224, 1863863, 3727726, 7455452, 14910904, 29821808, 76856939, 153713878, 307427756, 614855512, 1229711024, 1306567963, 2613135926, 5226271852, 10452543704, 20905087408]

約数ペア:

[(1, 20905087408), (2, 10452543704), (4, 5226271852), (8, 2613135926), (16, 1306567963), (17, 1229711024), (34, 614855512), (68, 307427756), (136, 153713878), (272, 76856939), (701, 29821808), (1402, 14910904), (2804, 7455452), (5608, 3727726), (11216, 1863863), (11917, 1754224), (23834, 877112), (47668, 438556), (95336, 219278), (109639, 190672)]