20993882

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:175

約数の個数: 48

約数和(自身を含む): 40674816

約数和(自身を除く): 19680934

約数列:

[1, 2, 7, 13, 14, 26, 31, 61, 62, 91, 122, 182, 217, 403, 427, 434, 793, 806, 854, 1586, 1891, 2821, 3721, 3782, 5551, 5642, 7442, 11102, 13237, 24583, 26047, 26474, 48373, 49166, 52094, 96746, 115351, 172081, 230702, 338611, 344162, 677222, 807457, 1499563, 1614914, 2999126, 10496941, 20993882]

約数ペア:

[(1, 20993882), (2, 10496941), (7, 2999126), (13, 1614914), (14, 1499563), (26, 807457), (31, 677222), (61, 344162), (62, 338611), (91, 230702), (122, 172081), (182, 115351), (217, 96746), (403, 52094), (427, 49166), (434, 48373), (793, 26474), (806, 26047), (854, 24583), (1586, 13237), (1891, 11102), (2821, 7442), (3721, 5642), (3782, 5551)]