20164620400

素因数分解:

$2^4\times 5^2\times {\mathrm{131}}^1\times {\mathrm{384821}}^1$

素因数の和:384970

約数の個数: 60

約数和(自身を含む): 48815440344

約数和(自身を除く): 28650819944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 131, 200, 262, 400, 524, 655, 1048, 1310, 2096, 2620, 3275, 5240, 6550, 10480, 13100, 26200, 52400, 384821, 769642, 1539284, 1924105, 3078568, 3848210, 6157136, 7696420, 9620525, 15392840, 19241050, 30785680, 38482100, 50411551, 76964200, 100823102, 153928400, 201646204, 252057755, 403292408, 504115510, 806584816, 1008231020, 1260288775, 2016462040, 2520577550, 4032924080, 5041155100, 10082310200, 20164620400]

約数ペア:

[(1, 20164620400), (2, 10082310200), (4, 5041155100), (5, 4032924080), (8, 2520577550), (10, 2016462040), (16, 1260288775), (20, 1008231020), (25, 806584816), (40, 504115510), (50, 403292408), (80, 252057755), (100, 201646204), (131, 153928400), (200, 100823102), (262, 76964200), (400, 50411551), (524, 38482100), (655, 30785680), (1048, 19241050), (1310, 15392840), (2096, 9620525), (2620, 7696420), (3275, 6157136), (5240, 3848210), (6550, 3078568), (10480, 1924105), (13100, 1539284), (26200, 769642), (52400, 384821)]