21300370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26599790

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 89, 91, 130, 178, 182, 263, 445, 455, 526, 623, 890, 910, 1157, 1246, 1315, 1841, 2314, 2630, 3115, 3419, 3682, 5785, 6230, 6838, 8099, 9205, 11570, 16198, 17095, 18410, 23407, 23933, 34190, 40495, 46814, 47866, 80990, 117035, 119665, 163849, 234070, 239330, 304291, 327698, 608582, 819245, 1521455, 1638490, 2130037, 3042910, 4260074, 10650185, 21300370]

約数ペア:

[(1, 21300370), (2, 10650185), (5, 4260074), (7, 3042910), (10, 2130037), (13, 1638490), (14, 1521455), (26, 819245), (35, 608582), (65, 327698), (70, 304291), (89, 239330), (91, 234070), (130, 163849), (178, 119665), (182, 117035), (263, 80990), (445, 47866), (455, 46814), (526, 40495), (623, 34190), (890, 23933), (910, 23407), (1157, 18410), (1246, 17095), (1315, 16198), (1841, 11570), (2314, 9205), (2630, 8099), (3115, 6838), (3419, 6230), (3682, 5785)]