19720064

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1693}}^1$

素因数の和:1727

約数の個数: 64

約数和(自身を含む): 48380640

約数和(自身を除く): 28660576

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1693, 2912, 3386, 5824, 6772, 11648, 11851, 13544, 22009, 23702, 27088, 44018, 47404, 54176, 88036, 94808, 108352, 154063, 176072, 189616, 216704, 308126, 352144, 379232, 616252, 704288, 758464, 1232504, 1408576, 1516928, 2465008, 2817152, 4930016, 9860032, 19720064]

約数ペア:

[(1, 19720064), (2, 9860032), (4, 4930016), (7, 2817152), (8, 2465008), (13, 1516928), (14, 1408576), (16, 1232504), (26, 758464), (28, 704288), (32, 616252), (52, 379232), (56, 352144), (64, 308126), (91, 216704), (104, 189616), (112, 176072), (128, 154063), (182, 108352), (208, 94808), (224, 88036), (364, 54176), (416, 47404), (448, 44018), (728, 27088), (832, 23702), (896, 22009), (1456, 13544), (1664, 11851), (1693, 11648), (2912, 6772), (3386, 5824)]