18798172720

素因数分解:

$2^4\times 5^1\times {\mathrm{3259}}^1\times {\mathrm{72101}}^1$

素因数の和:75373

約数の個数: 40

約数和(自身を含む): 43719768720

約数和(自身を除く): 24921596000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3259, 6518, 13036, 16295, 26072, 32590, 52144, 65180, 72101, 130360, 144202, 260720, 288404, 360505, 576808, 721010, 1153616, 1442020, 2884040, 5768080, 234977159, 469954318, 939908636, 1174885795, 1879817272, 2349771590, 3759634544, 4699543180, 9399086360, 18798172720]

約数ペア:

[(1, 18798172720), (2, 9399086360), (4, 4699543180), (5, 3759634544), (8, 2349771590), (10, 1879817272), (16, 1174885795), (20, 939908636), (40, 469954318), (80, 234977159), (3259, 5768080), (6518, 2884040), (13036, 1442020), (16295, 1153616), (26072, 721010), (32590, 576808), (52144, 360505), (65180, 288404), (72101, 260720), (130360, 144202)]