21128473900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{50753}}^1$

素因数の和:50971

約数の個数: 72

約数和(自身を含む): 48107483424

約数和(自身を除く): 26979009524

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 181, 230, 362, 460, 575, 724, 905, 1150, 1810, 2300, 3620, 4163, 4525, 8326, 9050, 16652, 18100, 20815, 41630, 50753, 83260, 101506, 104075, 203012, 208150, 253765, 416300, 507530, 1015060, 1167319, 1268825, 2334638, 2537650, 4669276, 5075300, 5836595, 9186293, 11673190, 18372586, 23346380, 29182975, 36745172, 45931465, 58365950, 91862930, 116731900, 183725860, 211284739, 229657325, 422569478, 459314650, 845138956, 918629300, 1056423695, 2112847390, 4225694780, 5282118475, 10564236950, 21128473900]

約数ペア:

[(1, 21128473900), (2, 10564236950), (4, 5282118475), (5, 4225694780), (10, 2112847390), (20, 1056423695), (23, 918629300), (25, 845138956), (46, 459314650), (50, 422569478), (92, 229657325), (100, 211284739), (115, 183725860), (181, 116731900), (230, 91862930), (362, 58365950), (460, 45931465), (575, 36745172), (724, 29182975), (905, 23346380), (1150, 18372586), (1810, 11673190), (2300, 9186293), (3620, 5836595), (4163, 5075300), (4525, 4669276), (8326, 2537650), (9050, 2334638), (16652, 1268825), (18100, 1167319), (20815, 1015060), (41630, 507530), (50753, 416300), (83260, 253765), (101506, 208150), (104075, 203012)]