20906613

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 38993920

約数和(自身を除く): 18087307

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 67, 91, 117, 127, 189, 201, 273, 351, 381, 469, 603, 819, 871, 889, 1143, 1407, 1651, 1809, 2457, 2613, 2667, 3429, 4221, 4953, 6097, 7839, 8001, 8509, 11557, 12663, 14859, 18291, 23517, 24003, 25527, 34671, 44577, 54873, 59563, 76581, 104013, 110617, 164619, 178689, 229743, 312039, 331851, 536067, 774319, 995553, 1608201, 2322957, 2986659, 6968871, 20906613]

約数ペア:

[(1, 20906613), (3, 6968871), (7, 2986659), (9, 2322957), (13, 1608201), (21, 995553), (27, 774319), (39, 536067), (63, 331851), (67, 312039), (91, 229743), (117, 178689), (127, 164619), (189, 110617), (201, 104013), (273, 76581), (351, 59563), (381, 54873), (469, 44577), (603, 34671), (819, 25527), (871, 24003), (889, 23517), (1143, 18291), (1407, 14859), (1651, 12663), (1809, 11557), (2457, 8509), (2613, 8001), (2667, 7839), (3429, 6097), (4221, 4953)]