20212960257

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{22391}}^1$

素因数の和:22523

約数の個数: 72

約数和(自身を含む): 35839739520

約数和(自身を除く): 15626779263

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 89, 147, 161, 207, 267, 441, 483, 623, 801, 1127, 1449, 1869, 2047, 3381, 4361, 5607, 6141, 10143, 13083, 14329, 18423, 22391, 39249, 42987, 67173, 100303, 128961, 156737, 201519, 300909, 470211, 514993, 902727, 1097159, 1410633, 1544979, 1992799, 3291477, 3604951, 4634937, 5978397, 9874431, 10814853, 13949593, 17935191, 25234657, 32444559, 41848779, 45834377, 75703971, 97647151, 125546337, 137503131, 227111913, 292941453, 320840639, 412509393, 878824359, 962521917, 2245884473, 2887565751, 6737653419, 20212960257]

約数ペア:

[(1, 20212960257), (3, 6737653419), (7, 2887565751), (9, 2245884473), (21, 962521917), (23, 878824359), (49, 412509393), (63, 320840639), (69, 292941453), (89, 227111913), (147, 137503131), (161, 125546337), (207, 97647151), (267, 75703971), (441, 45834377), (483, 41848779), (623, 32444559), (801, 25234657), (1127, 17935191), (1449, 13949593), (1869, 10814853), (2047, 9874431), (3381, 5978397), (4361, 4634937), (5607, 3604951), (6141, 3291477), (10143, 1992799), (13083, 1544979), (14329, 1410633), (18423, 1097159), (22391, 902727), (39249, 514993), (42987, 470211), (67173, 300909), (100303, 201519), (128961, 156737)]