20563816

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{601}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 48545280

約数和(自身を除く): 27981464

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 47, 52, 56, 91, 94, 104, 182, 188, 329, 364, 376, 601, 611, 658, 728, 1202, 1222, 1316, 2404, 2444, 2632, 4207, 4277, 4808, 4888, 7813, 8414, 8554, 15626, 16828, 17108, 28247, 31252, 33656, 34216, 54691, 56494, 62504, 109382, 112988, 197729, 218764, 225976, 367211, 395458, 437528, 734422, 790916, 1468844, 1581832, 2570477, 2937688, 5140954, 10281908, 20563816]

約数ペア:

[(1, 20563816), (2, 10281908), (4, 5140954), (7, 2937688), (8, 2570477), (13, 1581832), (14, 1468844), (26, 790916), (28, 734422), (47, 437528), (52, 395458), (56, 367211), (91, 225976), (94, 218764), (104, 197729), (182, 112988), (188, 109382), (329, 62504), (364, 56494), (376, 54691), (601, 34216), (611, 33656), (658, 31252), (728, 28247), (1202, 17108), (1222, 16828), (1316, 15626), (2404, 8554), (2444, 8414), (2632, 7813), (4207, 4888), (4277, 4808)]