21249248

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 43609104

約数和(自身を除く): 22359856

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 131, 137, 148, 262, 274, 296, 524, 548, 592, 1048, 1096, 1184, 2096, 2192, 4192, 4384, 4847, 5069, 9694, 10138, 17947, 19388, 20276, 35894, 38776, 40552, 71788, 77552, 81104, 143576, 155104, 162208, 287152, 574304, 664039, 1328078, 2656156, 5312312, 10624624, 21249248]

約数ペア:

[(1, 21249248), (2, 10624624), (4, 5312312), (8, 2656156), (16, 1328078), (32, 664039), (37, 574304), (74, 287152), (131, 162208), (137, 155104), (148, 143576), (262, 81104), (274, 77552), (296, 71788), (524, 40552), (548, 38776), (592, 35894), (1048, 20276), (1096, 19388), (1184, 17947), (2096, 10138), (2192, 9694), (4192, 5069), (4384, 4847)]