20199113956

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{128431}}^1$

素因数の和:128620

約数の個数: 48

約数和(自身を含む): 41685944832

約数和(自身を除く): 21486830876

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 137, 164, 274, 287, 548, 574, 959, 1148, 1918, 3836, 5617, 11234, 22468, 39319, 78638, 128431, 157276, 256862, 513724, 899017, 1798034, 3596068, 5265671, 10531342, 17595047, 21062684, 35190094, 36859697, 70380188, 73719394, 123165329, 147438788, 246330658, 492661316, 721396927, 1442793854, 2885587708, 5049778489, 10099556978, 20199113956]

約数ペア:

[(1, 20199113956), (2, 10099556978), (4, 5049778489), (7, 2885587708), (14, 1442793854), (28, 721396927), (41, 492661316), (82, 246330658), (137, 147438788), (164, 123165329), (274, 73719394), (287, 70380188), (548, 36859697), (574, 35190094), (959, 21062684), (1148, 17595047), (1918, 10531342), (3836, 5265671), (5617, 3596068), (11234, 1798034), (22468, 899017), (39319, 513724), (78638, 256862), (128431, 157276)]