20404496

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^2$

素因数の和:216

約数の個数: 60

約数和(自身を含む): 47681472

約数和(自身を除く): 27276976

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 89, 92, 112, 161, 178, 184, 322, 356, 368, 623, 644, 712, 1246, 1288, 1424, 2047, 2492, 2576, 4094, 4984, 7921, 8188, 9968, 14329, 15842, 16376, 28658, 31684, 32752, 55447, 57316, 63368, 110894, 114632, 126736, 182183, 221788, 229264, 364366, 443576, 728732, 887152, 1275281, 1457464, 2550562, 2914928, 5101124, 10202248, 20404496]

約数ペア:

[(1, 20404496), (2, 10202248), (4, 5101124), (7, 2914928), (8, 2550562), (14, 1457464), (16, 1275281), (23, 887152), (28, 728732), (46, 443576), (56, 364366), (89, 229264), (92, 221788), (112, 182183), (161, 126736), (178, 114632), (184, 110894), (322, 63368), (356, 57316), (368, 55447), (623, 32752), (644, 31684), (712, 28658), (1246, 16376), (1288, 15842), (1424, 14329), (2047, 9968), (2492, 8188), (2576, 7921), (4094, 4984)]