64391216

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{991}}^1$

素因数の和:1161

約数の個数: 40

約数和(自身を含む): 129896448

約数和(自身を除く): 65505232

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 131, 248, 262, 496, 524, 991, 1048, 1982, 2096, 3964, 4061, 7928, 8122, 15856, 16244, 30721, 32488, 61442, 64976, 122884, 129821, 245768, 259642, 491536, 519284, 1038568, 2077136, 4024451, 8048902, 16097804, 32195608, 64391216]

約数ペア:

[(1, 64391216), (2, 32195608), (4, 16097804), (8, 8048902), (16, 4024451), (31, 2077136), (62, 1038568), (124, 519284), (131, 491536), (248, 259642), (262, 245768), (496, 129821), (524, 122884), (991, 64976), (1048, 61442), (1982, 32488), (2096, 30721), (3964, 16244), (4061, 15856), (7928, 8122)]