663942128

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{19979}}^1$

素因数の和:20085

約数の個数: 40

約数和(自身を含む): 1347770880

約数和(自身を除く): 683828752

約数列:

[1, 2, 4, 8, 16, 31, 62, 67, 124, 134, 248, 268, 496, 536, 1072, 2077, 4154, 8308, 16616, 19979, 33232, 39958, 79916, 159832, 319664, 619349, 1238698, 1338593, 2477396, 2677186, 4954792, 5354372, 9909584, 10708744, 21417488, 41496383, 82992766, 165985532, 331971064, 663942128]

約数ペア:

[(1, 663942128), (2, 331971064), (4, 165985532), (8, 82992766), (16, 41496383), (31, 21417488), (62, 10708744), (67, 9909584), (124, 5354372), (134, 4954792), (248, 2677186), (268, 2477396), (496, 1338593), (536, 1238698), (1072, 619349), (2077, 319664), (4154, 159832), (8308, 79916), (16616, 39958), (19979, 33232)]