18291555

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 34974720

約数和(自身を除く): 16683165

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 115, 129, 135, 137, 207, 215, 345, 387, 411, 621, 645, 685, 989, 1035, 1161, 1233, 1935, 2055, 2967, 3105, 3151, 3699, 4945, 5805, 5891, 6165, 8901, 9453, 14835, 15755, 17673, 18495, 26703, 28359, 29455, 44505, 47265, 53019, 85077, 88365, 133515, 135493, 141795, 159057, 265095, 406479, 425385, 677465, 795285, 1219437, 2032395, 3658311, 6097185, 18291555]

約数ペア:

[(1, 18291555), (3, 6097185), (5, 3658311), (9, 2032395), (15, 1219437), (23, 795285), (27, 677465), (43, 425385), (45, 406479), (69, 265095), (115, 159057), (129, 141795), (135, 135493), (137, 133515), (207, 88365), (215, 85077), (345, 53019), (387, 47265), (411, 44505), (621, 29455), (645, 28359), (685, 26703), (989, 18495), (1035, 17673), (1161, 15755), (1233, 14835), (1935, 9453), (2055, 8901), (2967, 6165), (3105, 5891), (3151, 5805), (3699, 4945)]