20784268

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 40279680

約数和(自身を除く): 19495412

約数列:

[1, 2, 4, 17, 34, 53, 68, 73, 79, 106, 146, 158, 212, 292, 316, 901, 1241, 1343, 1802, 2482, 2686, 3604, 3869, 4187, 4964, 5372, 5767, 7738, 8374, 11534, 15476, 16748, 23068, 65773, 71179, 98039, 131546, 142358, 196078, 263092, 284716, 305651, 392156, 611302, 1222604, 5196067, 10392134, 20784268]

約数ペア:

[(1, 20784268), (2, 10392134), (4, 5196067), (17, 1222604), (34, 611302), (53, 392156), (68, 305651), (73, 284716), (79, 263092), (106, 196078), (146, 142358), (158, 131546), (212, 98039), (292, 71179), (316, 65773), (901, 23068), (1241, 16748), (1343, 15476), (1802, 11534), (2482, 8374), (2686, 7738), (3604, 5767), (3869, 5372), (4187, 4964)]