20508979504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1\times {\mathrm{4603}}^1$

素因数の和:5346

約数の個数: 80

約数和(自身を含む): 44246723584

約数和(自身を除く): 23737744080

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 691, 806, 1382, 1612, 2764, 3224, 4603, 5528, 6448, 8983, 9206, 11056, 17966, 18412, 21421, 35932, 36824, 42842, 59839, 71864, 73648, 85684, 119678, 142693, 143728, 171368, 239356, 278473, 285386, 342736, 478712, 556946, 570772, 957424, 1113892, 1141544, 1855009, 2227784, 2283088, 3180673, 3710018, 4455568, 6361346, 7420036, 12722692, 14840072, 25445384, 29680144, 41348749, 50890768, 82697498, 98600863, 165394996, 197201726, 330789992, 394403452, 661579984, 788806904, 1281811219, 1577613808, 2563622438, 5127244876, 10254489752, 20508979504]

約数ペア:

[(1, 20508979504), (2, 10254489752), (4, 5127244876), (8, 2563622438), (13, 1577613808), (16, 1281811219), (26, 788806904), (31, 661579984), (52, 394403452), (62, 330789992), (104, 197201726), (124, 165394996), (208, 98600863), (248, 82697498), (403, 50890768), (496, 41348749), (691, 29680144), (806, 25445384), (1382, 14840072), (1612, 12722692), (2764, 7420036), (3224, 6361346), (4603, 4455568), (5528, 3710018), (6448, 3180673), (8983, 2283088), (9206, 2227784), (11056, 1855009), (17966, 1141544), (18412, 1113892), (21421, 957424), (35932, 570772), (36824, 556946), (42842, 478712), (59839, 342736), (71864, 285386), (73648, 278473), (85684, 239356), (119678, 171368), (142693, 143728)]