21000481245

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{593}}^1\times {\mathrm{4549}}^1$

素因数の和:5326

約数の個数: 48

約数和(自身を含む): 36681044400

約数和(自身を除く): 15680563155

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 593, 865, 1557, 1779, 2595, 2965, 4549, 5337, 7785, 8895, 13647, 22745, 26685, 40941, 68235, 102589, 204705, 307767, 512945, 786977, 923301, 1538835, 2360931, 2697557, 3934885, 4616505, 7082793, 8092671, 11804655, 13487785, 24278013, 35413965, 40463355, 121390065, 466677361, 1400032083, 2333386805, 4200096249, 7000160415, 21000481245]

約数ペア:

[(1, 21000481245), (3, 7000160415), (5, 4200096249), (9, 2333386805), (15, 1400032083), (45, 466677361), (173, 121390065), (519, 40463355), (593, 35413965), (865, 24278013), (1557, 13487785), (1779, 11804655), (2595, 8092671), (2965, 7082793), (4549, 4616505), (5337, 3934885), (7785, 2697557), (8895, 2360931), (13647, 1538835), (22745, 923301), (26685, 786977), (40941, 512945), (68235, 307767), (102589, 204705)]