20399568

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:684

約数の個数: 80

約数和(自身を含む): 60888960

約数和(自身を除く): 40489392

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 109, 112, 168, 218, 327, 336, 436, 557, 654, 763, 872, 1114, 1308, 1526, 1671, 1744, 2228, 2289, 2616, 3052, 3342, 3899, 4456, 4578, 5232, 6104, 6684, 7798, 8912, 9156, 11697, 12208, 13368, 15596, 18312, 23394, 26736, 31192, 36624, 46788, 60713, 62384, 93576, 121426, 182139, 187152, 242852, 364278, 424991, 485704, 728556, 849982, 971408, 1274973, 1457112, 1699964, 2549946, 2914224, 3399928, 5099892, 6799856, 10199784, 20399568]

約数ペア:

[(1, 20399568), (2, 10199784), (3, 6799856), (4, 5099892), (6, 3399928), (7, 2914224), (8, 2549946), (12, 1699964), (14, 1457112), (16, 1274973), (21, 971408), (24, 849982), (28, 728556), (42, 485704), (48, 424991), (56, 364278), (84, 242852), (109, 187152), (112, 182139), (168, 121426), (218, 93576), (327, 62384), (336, 60713), (436, 46788), (557, 36624), (654, 31192), (763, 26736), (872, 23394), (1114, 18312), (1308, 15596), (1526, 13368), (1671, 12208), (1744, 11697), (2228, 9156), (2289, 8912), (2616, 7798), (3052, 6684), (3342, 6104), (3899, 5232), (4456, 4578)]