20129121872

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{989827}}^1$

素因数の和:989907

約数の個数: 40

約数和(自身を含む): 41240193792

約数和(自身を除く): 21111071920

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 164, 248, 328, 496, 656, 1271, 2542, 5084, 10168, 20336, 989827, 1979654, 3959308, 7918616, 15837232, 30684637, 40582907, 61369274, 81165814, 122738548, 162331628, 245477096, 324663256, 490954192, 649326512, 1258070117, 2516140234, 5032280468, 10064560936, 20129121872]

約数ペア:

[(1, 20129121872), (2, 10064560936), (4, 5032280468), (8, 2516140234), (16, 1258070117), (31, 649326512), (41, 490954192), (62, 324663256), (82, 245477096), (124, 162331628), (164, 122738548), (248, 81165814), (328, 61369274), (496, 40582907), (656, 30684637), (1271, 15837232), (2542, 7918616), (5084, 3959308), (10168, 1979654), (20336, 989827)]