20427512

素因数分解:

$2^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 47141280

約数和(自身を除く): 26713768

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 41, 49, 56, 62, 82, 98, 124, 164, 196, 217, 248, 287, 328, 392, 434, 574, 868, 1148, 1271, 1519, 1681, 1736, 2009, 2296, 2542, 3038, 3362, 4018, 5084, 6076, 6724, 8036, 8897, 10168, 11767, 12152, 13448, 16072, 17794, 23534, 35588, 47068, 52111, 62279, 71176, 82369, 94136, 104222, 124558, 164738, 208444, 249116, 329476, 364777, 416888, 498232, 658952, 729554, 1459108, 2553439, 2918216, 5106878, 10213756, 20427512]

約数ペア:

[(1, 20427512), (2, 10213756), (4, 5106878), (7, 2918216), (8, 2553439), (14, 1459108), (28, 729554), (31, 658952), (41, 498232), (49, 416888), (56, 364777), (62, 329476), (82, 249116), (98, 208444), (124, 164738), (164, 124558), (196, 104222), (217, 94136), (248, 82369), (287, 71176), (328, 62279), (392, 52111), (434, 47068), (574, 35588), (868, 23534), (1148, 17794), (1271, 16072), (1519, 13448), (1681, 12152), (1736, 11767), (2009, 10168), (2296, 8897), (2542, 8036), (3038, 6724), (3362, 6076), (4018, 5084)]