20512421672

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1\times {\mathrm{881}}^1$

素因数の和:1646

約数の個数: 64

約数和(自身を含む): 39736040400

約数和(自身を除く): 19223618728

約数列:

[1, 2, 4, 8, 53, 89, 106, 178, 212, 356, 424, 617, 712, 881, 1234, 1762, 2468, 3524, 4717, 4936, 7048, 9434, 18868, 32701, 37736, 46693, 54913, 65402, 78409, 93386, 109826, 130804, 156818, 186772, 219652, 261608, 313636, 373544, 439304, 543577, 627272, 1087154, 2174308, 2910389, 4155677, 4348616, 5820778, 8311354, 11641556, 16622708, 23283112, 28809581, 33245416, 48378353, 57619162, 96756706, 115238324, 193513412, 230476648, 387026824, 2564052709, 5128105418, 10256210836, 20512421672]

約数ペア:

[(1, 20512421672), (2, 10256210836), (4, 5128105418), (8, 2564052709), (53, 387026824), (89, 230476648), (106, 193513412), (178, 115238324), (212, 96756706), (356, 57619162), (424, 48378353), (617, 33245416), (712, 28809581), (881, 23283112), (1234, 16622708), (1762, 11641556), (2468, 8311354), (3524, 5820778), (4717, 4348616), (4936, 4155677), (7048, 2910389), (9434, 2174308), (18868, 1087154), (32701, 627272), (37736, 543577), (46693, 439304), (54913, 373544), (65402, 313636), (78409, 261608), (93386, 219652), (109826, 186772), (130804, 156818)]