20269928

素因数分解:

$2^3\times 7^3\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 25090072

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 83, 89, 98, 166, 178, 196, 332, 343, 356, 392, 581, 623, 664, 686, 712, 1162, 1246, 1372, 2324, 2492, 2744, 4067, 4361, 4648, 4984, 7387, 8134, 8722, 14774, 16268, 17444, 28469, 29548, 30527, 32536, 34888, 51709, 56938, 59096, 61054, 103418, 113876, 122108, 206836, 227752, 244216, 361963, 413672, 723926, 1447852, 2533741, 2895704, 5067482, 10134964, 20269928]

約数ペア:

[(1, 20269928), (2, 10134964), (4, 5067482), (7, 2895704), (8, 2533741), (14, 1447852), (28, 723926), (49, 413672), (56, 361963), (83, 244216), (89, 227752), (98, 206836), (166, 122108), (178, 113876), (196, 103418), (332, 61054), (343, 59096), (356, 56938), (392, 51709), (581, 34888), (623, 32536), (664, 30527), (686, 29548), (712, 28469), (1162, 17444), (1246, 16268), (1372, 14774), (2324, 8722), (2492, 8134), (2744, 7387), (4067, 4984), (4361, 4648)]