20506512

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 80

約数和(自身を含む): 58121280

約数和(自身を除く): 37614768

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 59, 78, 104, 118, 156, 177, 208, 236, 312, 354, 472, 557, 624, 708, 767, 944, 1114, 1416, 1534, 1671, 2228, 2301, 2832, 3068, 3342, 4456, 4602, 6136, 6684, 7241, 8912, 9204, 12272, 13368, 14482, 18408, 21723, 26736, 28964, 32863, 36816, 43446, 57928, 65726, 86892, 98589, 115856, 131452, 173784, 197178, 262904, 347568, 394356, 427219, 525808, 788712, 854438, 1281657, 1577424, 1708876, 2563314, 3417752, 5126628, 6835504, 10253256, 20506512]

約数ペア:

[(1, 20506512), (2, 10253256), (3, 6835504), (4, 5126628), (6, 3417752), (8, 2563314), (12, 1708876), (13, 1577424), (16, 1281657), (24, 854438), (26, 788712), (39, 525808), (48, 427219), (52, 394356), (59, 347568), (78, 262904), (104, 197178), (118, 173784), (156, 131452), (177, 115856), (208, 98589), (236, 86892), (312, 65726), (354, 57928), (472, 43446), (557, 36816), (624, 32863), (708, 28964), (767, 26736), (944, 21723), (1114, 18408), (1416, 14482), (1534, 13368), (1671, 12272), (2228, 9204), (2301, 8912), (2832, 7241), (3068, 6684), (3342, 6136), (4456, 4602)]