20688832

素因数分解:

$2^6\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 56

約数和(自身を含む): 43342560

約数和(自身を除く): 22653728

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 71, 116, 142, 157, 232, 284, 314, 464, 568, 628, 928, 1136, 1256, 1856, 2059, 2272, 2512, 4118, 4544, 4553, 5024, 8236, 9106, 10048, 11147, 16472, 18212, 22294, 32944, 36424, 44588, 65888, 72848, 89176, 131776, 145696, 178352, 291392, 323263, 356704, 646526, 713408, 1293052, 2586104, 5172208, 10344416, 20688832]

約数ペア:

[(1, 20688832), (2, 10344416), (4, 5172208), (8, 2586104), (16, 1293052), (29, 713408), (32, 646526), (58, 356704), (64, 323263), (71, 291392), (116, 178352), (142, 145696), (157, 131776), (232, 89176), (284, 72848), (314, 65888), (464, 44588), (568, 36424), (628, 32944), (928, 22294), (1136, 18212), (1256, 16472), (1856, 11147), (2059, 10048), (2272, 9106), (2512, 8236), (4118, 5024), (4544, 4553)]